I could able to upload the file successfully but the input value not passing through the method

​​​​​​​HTML:

<template>
    
    <!--lightning-record-edit-form  object-api-name="Credicard"-->
    <lightning-card icon-name="custom:custom19" title='Credit card information uplaod'>
        <div class="slds-m-around_medium">
                    <div class="slds-grid slds-wrap">
                            <div class="slds-col slds-size_1-of-2">
                    <lightning-layout-item size="6" padding="around-medium"> 
<lightning-input type="number" name="Import Id"  required label="Import Id"  value={impnum} 
        onclick={handlechange} style="width:200px">
            </lightning-input>
            
</lightning-layout-item>
        </div>
        <div class="slds-col slds-size_1-of-2">
                <lightning-layout-item size="6" padding="around-medium"> 
                 <template if:true={Programvalues.data}>
                     <lightning-combobox
                     name="Program"
                     label="Program"
                     value={Programvalue}
                     placeholder="-Select-"
                     options={Programvalues.data.values}
                     onchange={handleselect} style="width:200px"></lightning-combobox>
                 </template>
             </lightning-layout-item>
         </div>
         <div class="slds-col slds-size_1-of-2">
                <lightning-layout-item size="6" padding="around-medium"> 
        
                    <template if:true={AXvalues.data}>
                        <lightning-combobox 
                        name="AXvalue"
                        label="AxPID"
                        value={Avalue}
                        placeholder="-Select-"
                        options={AXvalues.data.values}
                        onchange={handleselect}  style="width:200px" ></lightning-combobox>
                    </template>
                </lightning-layout-item>
                </div>
                <div class="slds-col slds-size_1-of-2">
                        <lightning-layout-item size="6" padding="around-medium"> 
                                <lightning-input type="number" name="Exchange Rate"  required label="Exchange Rate"  value={inpputnum} 
                                onclick={handlechange1} style="width:200px" >
                  </lightning-input>
                  
                
                        </lightning-layout-item>
                        </div>
                    </div>
                </div>
                                
                        
                        <lightning-file-upload
                        name="Import Data"
                                label="Import Data"
                        
                                accept={acceptedFormats}
                        
                                record-id={recordId}
                        
                                onuploadfinished={handleUploadFinished} ></lightning-file-upload>
                        
                        
                        
                        <template if:true ={success} >
                        
                                
                        <c-error-panel errors={success}></c-error-panel>
                        
                        </template>
                        
                        <template if:true={failure}>
                        
                        <c-error-panel errors={failure}></c-error-panel>
                        
                        </template>
                    
                        
                    
                    
        
                </lightning-card>
            </template>
          
        
    JS:
import { LightningElement ,wire,track,api} from 'lwc';
import { getPicklistValues } from 'lightning/uiObjectInfoApi';
import { getObjectInfo } from 'lightning/uiObjectInfoApi';
import CREDITCARD_OBJECT from '@salesforce/schema/Credit_card__c';
import PROGRAMM_Field from '@salesforce/schema/Credit_card__c.Choose_Program_Reason__c';
import AXPID_Field from '@salesforce/schema/Credit_card__c.AX_PID__c';
//import EXCHANERATE_FIELD from '@salesforce/schema/Credit_card__c.Exchange_Rate__c';
//import IMPORT_FIELD from '@salesforce/schema/Credit_card__c.ImportId__c';
import {ShowToastEvent} from 'lightning/platformShowToastEvent';
import insertdata from '@salesforce/apex/importdata.readCSVFileInsertMember';
//const columns = [
    //{ label: 'CampaignId', fieldName: 'CampaignId' }, 
   // { label: 'ContactId', fieldName: 'ContactId' },
  //  { label: 'Status', fieldName: 'Status'}
//];
export default class Uploadfilewithinput extends LightningElement {
    //Credicard=CREDITCARD_OBJECT;
  //  ExchaneRate=EXCHANERATE_FIELD;
   // ImpotId=IMPORT_FIELD;
    @api impnum ="";
    inpputnum="";
    Programvalue="";
    Avalue="";
    @track success;
    @track failure;
    @api recordId;
   // @track data;
   // @track columns =columns;
handlechange(event){
 this.impnum=event.target.value;
}
handlechange1(event){
this.inpputnum=event.target.value;
}
   @wire(getObjectInfo, { objectApiName: CREDITCARD_OBJECT })
   objectInfo; 
   @wire(getPicklistValues, { recordTypeId: '012000000000000AAA', fieldApiName:PROGRAMM_Field})
    Programvalues;
      @wire(getPicklistValues, { recordTypeId: '012000000000000AAA', fieldApiName: AXPID_Field})
      AXvalues;
    @wire(insertdata , { impnum: '$impnum'})
    deWired;
      //inpputnum: '$inpputnum',Programvalue: '$Programvalue',Avalue: '$Avalue'
  
    handleselect(event){
      
       if(event.target.name ==='Program'){
          this.Programvalue=event.target.value;
     }
       if(event.target.name === 'AXvalue'){
           this.Avalue=event.target.value;
        }
}
get acceptedFormats() {
    return ['.csv'];
}
handleUploadFinished(event) {
    const uploadedFiles = event.detail.files;
   insertdata({idContentDocument : uploadedFiles[0].documentId}) 
    .then(result => {
      this.success = result;  
     this.dispatchEvent(
        new ShowToastEvent({
           title: 'Success!!',
            message: 'Campaign Members are created based CSV file!!!',
    variant: 'success',
        }),
    );
    })
    .catch(error => {
        this.failure=error;
        this.dispatchEvent(
            new ShowToastEvent({
              title: 'Error!!',
                message: JSON.stringify(error),
                variant: 'error',
            }),
        );     
   });
    
}
}

Contoller:
public class importdata{
    
    @AuraEnabled 
    public static List<Campaignmember> readCSVFileInsertMember(Id idContentDocument,string impnum ){
    
     
    List<Campaignmember> lstCampaignMembers = new List<Campaignmember>();
        if(idContentDocument != null) {
            ContentVersion objVersion = [Select Id,VersionData FROM ContentVersion WHERE ContentDocumentId =: idContentDocument][0];
            
            if(objVersion != null) {
            
            Blob csvFileBody =objVersion.VersionData;
               String csvAsString = csvFileBody.toString();
          
                String[] csvFileLines = csvAsString.split('\n'); 
                
                
                
                for(Integer i=1;i<csvFileLines.size();i++){
               
                    Campaignmember  camobj = new Campaignmember() ;
                    string[] csvRecordData = csvFileLines[i].split(',');
                    camobj.CampaignId= csvRecordData[0] ;             
                    camobj.ContactId= csvRecordData[1];
                    camobj.Status= csvRecordData[2];
                    camobj.impnum__c=impnum;
                                                                                               
                    lstCampaignMembers.add(camobj );   
                }
            
                if(!lstCampaignMembers.isEmpty()) {
                    insert lstCampaignMembers;
                }
                }
                }
        
        return lstCampaignMembers;
       
        }
   }