I have a problem and I hope someone can help me. I'm trying to create a validation for my application. I have a Master/Detail view where I add rows to my database and in the rows there is a "from date" and "to date". I want to create a validation so that the "from date" can not be chosen before the current date.
I'm having trouble because most of the tutorials I read on this work with page items, but since I have this in a Master/Detail view I have Column Attributes, wich do not behave the same way as page items.