Need to set null lookup value through the Power Pages web API, and your copilot does not know how to do it, yet?

Let’s say you are trying to use Power Pages web api to set a lookup column to null.

You might want to ask copilot, but, depending on which one you ask (maybe none of them?), it might not know, not yet at least:

Well, normally, you’d be using this syntax to prepare your data object for the ajax webapi call:

data[“[email protected]”] = “/ita_tablenames(” + value + “)”;

This would not work for nulls, though, and this would not work either:

data[“[email protected]”] = null;

Instead, you need this:

data[“ita_TableName”] = null;

So your code would look more or less like this:

if(value){
   data["[email protected]"] = "/ita_tablenames(" + value + ")";
}
else{
   data["ita_TableName"] = null;
}