virtual agent topics show /hide with condition

[dheeru_1994]

Hello All i have requirement in virtual agent topics  i want some topics show in sp portal and some are show in esc portal  i have tried all the solution which are given in community but none of the any solution working 
is there any one who can really solve the issue 
this issue is going on and not really find solution for that 
@Sandeep Rajput @Mark Roethof @Ankur Bawiskar 

[dheeru_1994]

(function execute() {

   
  if (vaContext.portal='sp'){
gs.info( 'welcome to the servicenow ');
   return true;

  }
 
})()