<cfset b = function1() />

<cfoutput>#b#</cfoutput>

<cffunction name="function1">
    <cfset var data = "Hello world" />

    <cfset function2() />

    <cfreturn data />
</cffunction>

<cffunction name="function2">
    <cfset var data = "GONE" />

    <cfreturn />
</cffunction>