I have created a custom Function in Power BI as follow:

 

let
CallAPI= (
URL as text,
Token as text
) as any =>
let

WebResponse = Web.Contents(URL&"?UIN="&Token)
in
WebResponse

in
CallAPI

 

And then I try to call the above function in another Query:

 

let
Source = CallAPI("xyz.test.org.sg/.../getdetails", Paranric)

in
Source

 

 

note: Paranric is a parameter 

 

However, I got an Expression error: The name "CallAPI" wasn't recognized. Make sure it's spelled correctly.

----

Anyone can advise what is the problem? 

Thanks.