How to see local variable value in Web API

Hi,

I have a web API, and inside that am calling few expression rules and storing it in Local variable.

Is there a way that i can see what value is getting stored in that local Variable.(just like we have an option in interface, expression rules.)

Eg:

From local!getDelta am getting Delta value

local!abc: rule!xyz(

getDelta:local!getDelta,

processid:index(http!request.querryParameters,"processId",{})

)

I need to check what is the value in local!abc in Web API object.