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san5augsan5aug 

value of input parameter of Lightning component is null when passing through Flow builder

I have a lightning component on Flow screen. We are passing 2 input parameter in lightning compoment from Flow. while debugging the flow, I can see that value of recordId is fine but requestId is getting null. Flow variables are available for input/output. and I am passing values of these attributes in lightning component. Am I doing something wrong? Please help. 

just to remove any doubt of initializing the refernce of recordid in LC, I created a brand new attribute in LC and Flow. Flow attribute has a value but when I pass this to LC, it becomes null.
<aura:component implements = "force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes,force:lightningQuickAction,lightning:availableForFlowScreens" access="global" controller = "VendorDetailCtrl" >
    <aura:attribute name="recordId" type="String" />
    <aura:attribute name="requestId" type="String" />	
</aura:component>
<design:component>
	<design:attribute name="recordId" label="OpportunityId" />
    <design:attribute name="requestId" label="Erip Request Id" />    
</design:component>


mapping of Flow attributes and LC
Raj VakatiRaj Vakati
With this code and image its very difficult answer this. I dnt see any issue from this code

Please check whether you are getting any values in the requestId field value in flow or not 
Please check you have included this field in RecordQury Elements .. 


https://blogs.absyz.com/2018/03/06/lightning-components-as-flow-screens/

https://rajvakati.com/2018/04/01/__trashed-24/
https://developingflow.com/2018/06/11/lightning-components-in-flow/