FPM Form GL2 Toggle Button Type-Dependent Properties

Hi Experts,

This is a maybe a Thomas Jung kind of question.

I am implementing Form UIBB GL2 and using a toggle button to expand/collapse details. It is doing the trick however, when it the toggle status is checked the image disappears. The reason for that the image_checked attribute of the element appears as a checkbox field on the component configuration page as below.

and when I tick the checkbox it is completely loosing it. I suppose it is assinging an "X" to the image_checked value and of course it is not recognised as an image.

So, is there a way to set image_checked value into the component configuration, or should I take the hard way using  if_fpm_guibb_form_cfg_gl2 to add the button to the desired location. I really don't want to waste more time with this.

This really looks like a bug to me, and I hope there already is a solution.

Best Regards

Emre