How do I use the "Is on screen" condition (or do something like it) using a first person 3d Camera?

When looking to see if a certain object is visible in the screen with this condition, It doesn't really work well. I also try with using a 2d sprite on a 2d layer and checking if this sprite is over the specified object but it's still working weird and is inconsistant. Is there an other way of checking if objects are on screen with a 3d camera?

i made a small project to test it but it worked fine with me

i tried:

+ System: Every tick -> Text: Set text to Variable1 + 3DShape: Is on-screen -> System: Add 1 to Variable1 + Keyboard: On Space pressed -> 3DShape: Move forward 20 pixels

I re-made everything using "Is on screen" condition and it worked. I have no idea why I was not able to make it work the first time.

Anyway thank you!