i need solution for this?

I think Adam is talking about doing something like this, which is more in line with best programing practices. It's also a good idea to name-scope your variables within the component:

o.cfc

cfcomponent>

<cffunction  name="logon1" access="remote" returntype="struct" >

<cfargument name="from_where" type="string" required="true" >

<cfargument name="varsClient" type="struct" required="true" >

<cfargument name="appName" type="struct" required="true" >

<cfset form.from_where=from_where>

        <cfset loStruct = structNew()>

        <cfparam name="loStruct.sec_user_id" default="">
        <cfparam name="loStruct.org_focus" default="">

        <cfquery name="close_record" Datasource="#request.ds.auth#">
            UPDATE    logon_activity_track
            SET        record_closed = 1
            WHERE    (cfid = '#arguments.varsClient.cfid#:#arguments.varsClient.cftoken#' and

                    app = '#arguments.appname#' and
                    sec_user_id = #val(arguments.varsClient.sec_user_id)# and

                    sec_organization_id = #val(arguments..varsClient.org_focus)#  and

                    record_closed = 0)
        </cfquery>

        <cfset arguments.varsClient.vl = "">

        <cfset arguments.varsClient.suag = "">       

        <cfset arguments.varsClient.sec_user_id = "">

        <cfset arguments.varsClient.sec_organization_id = "">        

       <cfreturn varsClient />

</cffunction>

</cfcomponent>

result2.cfm

<cfobject name="TestObject1" component="IST_Business_Applications.IST_Docstor.file_access.lo" >

<cfset a=TestObject1.logon1("logout", varsClient = client, appName = application.applicationName)>

<cfset w = structdelete(session,"ap")>

<cfdump var="#a#">

Your function doesn't return anything, so - indeed - your variable "a" will be undefined.

I think you should read up on code encapsulation, btw.  You're using an awful lot of external variables in the function, which is pretty poor practice.  Other than in extreme circumstances, a function should only deal with variables it has passed in as arguments, and other variables in itself creates.  It should not access external variables (like stuff in the client, session, form and request scope, like you're doing).

You should also parametrise your query, rather than hard-coding your variables into it.

--

Adam