custom button in 3dsmax

NAIMA

Hi I was makign a custom button , I went to customize toolbar, selected a desired action , assigned a key bombination and then in the toolbar I created a new buttjon and applied to the toolabr top , but it has no icon and is no selectable  so I dragged in it the custom script for it , but doesn't apply the icon of script , right clicking on the button doesn't seem to allow any edit button appearence , how can I do to give the button a proper icon?

musashidan

Right click the button, edit button, choose an icon from the list or add a custom one. 

NAIMA

Yeha I tried that bit it doesnt work , I Rclick on it but keeps appearing only the toolbar menu list.