Apologies in advance- I haven’t used Dynamo in years and I’m pretty rusty…

I’m trying to use Vector.AngleAboutAxis to calculate an angle from coordinates (X & Y are all I’m concerned about- they represent a camera direction from another application)

For some reason, I get a zero angle result- no matter what numbers I put in.

In the below example, I’d expect to get an angle of 45deg (or something like that)

Any suggestions or input would be appreciated

thank you

Andrew