Thank you Andre... here's a breakdown of the user flow:
He chooses a user group, a specific table, a specific field from a list and in the value field he'll find a lookup depending on the field he chose (InventLocationId in my example) the lookup will show all the warehouses, if he chose AccountNum, the lookup will show all customers, etc..
The expected behavior is:
He chooses a field (InventLocationId) and then choose a value from the drop down lookup list.
If he wants to add another value he attaches a comma and use the lookup again and select another value like this (101011,121011).
The problem is:
When he chooses the first value and attach a comma (101011,) the lookup filters automatically with this text "101011,"
I don't want the lookup to be filtered with the text automatically, although he can click on the filter and clear the filter value (101011,) and then the lookup will show all the values again, but I don't want the user to have to do this!
Another problem is when he the value has the text "101011," and he chooses "121011" from the lookup, the whole text is being replaced with the new lookup value, so (101011,) becomes (121011)