Copies of Ability

Hi,
I wanted to add a few trading buttons to a building. To do so I copied 8 times a morphing ability (cause they react at once) and modiefied the copies so that 4 of them buy (10, 100, 1000, 10000) and 4 of them sell. Unfortunately the games seems to realise that all those abilities have the same 'parent' ability and therefor displays only the first of the 8 ones. Is there a gameplay constant or some similar that allows multtiple copies of 1 ability to be used by one unit-type?

btw: Is there a chance to modify the tooltip of a ability during the game? Only cause I thought it would be great to have the current value of the traded goods being shown on the buttons ... if not I will show it in a scoreboard.