"onaddrow in subform" Event in Form - only first row is executed

"onaddrow in subform" Event in Form - only first row is executed


i want to pass data from a Parent form to a field in a subform and use the "on add row in subform" in the parent form.

However this event seems to be triggered only for the FIRST row i add in the subform field
When adding a second or third row - the script is not executed and the values are not passed to the subform :-(
Any ideas?