Hello All,

I am facing issue on action function with parameter. When i  calling  apex method from javascript then apex method called and create record in salesforce.  I want update 3 salesforce fields from javascript variable vlaue value into salesfoce.
My code is here
public class BBH_SurveyCopy {
 Public String Survey_comments {get;set;} 
 public String enteredText1{get;set;}
    public String enteredText2{get;set;}
    public String enteredText3{get;set;}

 Public  void createSurvey(){
        
        
               BBH_Surveys__c bbh=new BBH_Surveys__c();
               bbh.Ques1__c=enteredText1;
                  bbh.Ques2__c=enteredText2;
               bbh.Ques3__c=enteredText3;
               bbh.Surveys_Name__c='a2yW00000018lN0';    
               bbh.Survey_Comments__c =Survey_comments;
            insert bbh;
              }
}


vf page is 


 <apex:form id="fm" styleClass="Frm-c" >
        <apex:pageMessages id="showmsg"></apex:pageMessages>   
            <apex:inputtextarea styleclass="fgh"   value="{!Survey_comments}"   cols="80" rows="3" Rendered="{!hidecmtbtn}"/><br/>
              <apex:actionFunction name="echo" action="{!createSurvey}">
               <apex:param name="firstParam" assignTo="{!enteredText1}" value="" />
              <apex:param name="secondParam" assignTo="{!enteredText2}" value=""/>
             <apex:param name="thirdParam"  assignTo="{!enteredText3}" value="" /> 
             </apex:actionFunction>
           
          
          
             
        
          
          <div style="text-align:center; margin-top:40px;">
             <apex:commandButton styleClass="asd"  value="Update Survey"   Rendered="{!modibtn}"  onclick="modiresponse(event);" reRender="fm"/> 
              <apex:commandButton styleClass="asd"   onclick="callActionMethod(event);" reRender="showmsg" Rendered="{!hidecmtbtn}" value="Submit Survey"/>
                 </div>
           </apex:form> 

function callActionMethod(event)
{
   
    
     var txtVal1 ='1';
   var txtVal2 = '2';
   var txtVal3 = '3';  
 /*Below Method is generated by "apex:actionFunction" which will call Apex Method "echoVal"*/ 
    echo(txtVal1,txtVal2,txtVal3);
}

Please help me on this