Fx Null changes to literal 'Null' string.

Question

Hi All,

I have a weird issue I was wondering if anyone had experienced before.

I have a do until loop that interates through a series of API calls. The API call itself is huge so I have had to iterate through several pages.

The loop should terminate whenever the odata.nextLink() is Null.

However, I am trying to set it to FX Null (see below) but it always changes back to the literal string 'null' when I save the designer and refresh it.

Has anyone come across this before?

Fx Null before save & refresh.

Literal 'null' string after save and refresh.

Its causing my until loop to never timeout. The true count is much more than 3 but if I increase it doesn't work as expected.

For reference, I am making an API call to Microsoft Defender for Endpoint.