Preventing a unit from selling an item

I've no clue on how to venture into this trigger wise. Anyone got any ideas on how it would work?

-Av3n

Could you use this?

That's funny... I thought there was a field in the Object Editor for this? Something like 'Item - Is Sellable/Pawnable". Or I think it was "Can be Sold to Merchants" and "Can be Sold by Merchants".

It's cause I'm handling most of the items via triggers since I do need them a t some point sellable.

Thanks for the tip, I always scrolled past that function XD.

-Av3n