[flexcoders] How to check if value exists in a return API call?

[jovialrandor]

I have API call that returns me this:

1.  result>ENTITLEMENT>USERS>USER>CAN_NOT_UPDATE_ASSET=null

2. result>ENTITLEMENT>USERS>USER>CAN_UPDATE_ASSET>ASSET_ID=application



I want to be able to display a message if 'CAN_UPDATE_ASSET" returns
null.



Thanks