Hello,

I am trying to incorporate Multi-Select picklist in a VF page for a custom object.
Problem is Multi-Select is not showing all ~30 values. Instead it just displays 6-7 values.
How can I correct it??
Below is is VF page and related class.

VF Page...


<apex:page standardcontroller="Rules__c" extensions="addRules" tabStyle="Rules__c" sidebar="false" >
<apex:form >
<apex:pageblock id="theRuleRec" >
<apex:pageblocksection columns="1" id="thePagSec">
<apex:outputLabel value="Selection">
<apex:inputField value="{!rulRec.Selection__c}"/>
</apex:outputLabel>
<apex:pageBlockSectionitem >
<apex:outputLabel value="LOB Values">
<apex:inputField value="{!rulRec.Values_of_LOB__c}"/>
</apex:outputLabel>
</apex:pageBlockSectionitem>
<apex:pageBlockSectionitem >
<apex:outputLabel value="POI Value">
<apex:inputField value="{!rulRec.Values_of_POI__c}"/>
</apex:outputLabel>
</apex:pageBlockSectionitem>
<apex:outputlabel value="Destination">
<apex:inputField value="{!rulRec.Destination_Name__c}"/>
</apex:outputLabel> </apex:pageBlockSection>
<apex:pageBlockButtons >
<apex:commandButton action="{!save}" value="Save" />
<apex:commandButton value="Cancel" action="{!cancel}"/>
</apex:pageBlockButtons> </apex:pageblock> <center>
<apex:outputText value="{!strMsg}" id="msg" style="color:#FF0000"/>
</center> <apex:pageblock id="theRuleLst" >
<apex:pageblockTable value="{!RuleRecords}" var="rule" rendered="{!if(editRec == true,false,true)}">
<apex:column >
<apex:inputCheckbox value="{!rule.Checkbox__c}" />
</apex:column> <apex:column value="{!rule.Id}" />
<apex:column value="{!rule.Selection__c}" />
<apex:column value="{!rule.Values_of_LOB__c}" />
<apex:column value="{!rule.Values_of_POI__c}" />
<apex:column value="{!rule.Destination_Name__c}" />
<apex:column value="{!rule.Rule_Updated__c}" />
<!-- <apex:column > <apex:commandButton value="Edit" action="{!editRulLst}"/>
</apex:column> -->
</apex:pageblockTable>
<apex:pageblockTable value="{!RuleRecords}" var="rule" rendered="{!if(editRec == true,true,false)}" id="theRuleLstEdit">
<apex:column >
<apex:inputCheckbox value="{!rule.Checkbox__c}" />
</apex:column> <apex:column value="{!rule.Id}" />
<apex:column headerValue="Selection" >
<apex:inputfield value="{!rule.Selection__c}"/>
</apex:column> <apex:column headerValue="POI Values" >
<apex:inputfield value="{!rule.Values_of_POI__c}"/>
</apex:column> <apex:column headerValue="LOB Values" >
<apex:inputField value="{!rule.Values_of_LOB__c}"/>
</apex:column> <apex:column headerValue="Destination Name" >
<apex:inputField value="{!rule.Destination_Name__c}"/>
</apex:column> </apex:pageblockTable>
<apex:pageBlockButtons >
<apex:commandButton value="Update" action="{!updateRulLst}" rerender="theRuleLst,thePagSec" rendered="{!if(editRec == true,true,false)}" disabled="{!if(RuleRecords.size = 0,true,false)}"/>
<apex:commandButton value="Edit" action="{!editRulLst}" rendered="{!if(editRec == false,true,false)}" id="theRuleRec" disabled="{!if(RuleRecords.size = 0,true,false)}"/>
<apex:commandButton value="Delete" action="{!deleteRulLst}" rerender="theRuleLst,thePagSec,msg" rendered="{!if(editRec == true,true,false)}" disabled="{!if(RuleRecords.size = 0,true,false)}"/>
<apex:commandButton value="Cancel" action="{!cancelLst}" rerender="theRuleLst,thePagSec" rendered="{!if(editRec == true,true,false)}"/> </apex:pageBlockButtons>
</apex:pageblock>
</apex:form>
</apex:page>

Apex Class...

<Very Long and useed only for Edit/Delete/Save>
<If needed, I wil post it>

Any help is appreciated.
Thanks in advance.