I recently read a thread on here about using a certain kind of royal icing mix and adding 1/3 c hot water and when you use it and let it dry it is stretchy the next day and you can put it on the cake. I think the brand had the name kitchen it, but where i am at, i dont have that brand. Would that work with wilton royal icing mix or any other one? Please help me out!

Actually, it was a gumpaste mix, and this is the thread url, sorry for the mix-up.
http://cakecentral.com/modules.php?name=Forums&file=viewtopic&t=676017&postdays=0&postorder=asc&highlight=flexible&&start=0