Problem with AeroPngButton

[Holger Schaper]

Dear support team,
we use Installaware Studio X6 Creators Update 23.12 from 19.09.2017.

I have to problem with an AeroPngButton.
My button has 4 images ((PngImage/PngImageDiabled/PngImageDown/PngImageHot)
When the user click on an images (PngImageDown) i want to set a radio-button to be selected.
I have configured an object rule:
AeroPngButton.PngImageDown = 27310896 then Radiobutton.checked := true
(the number was created from the dialog)

When i debug the install process and push on my image, nothing happens - what's wrong (attached an image from the object rule)?
Can you please help me ?

Thanks and regards

Holger