Button icon ids for excel 2007

Hi, i reworking someone else macro and actually, i want to add more macros in custom toolbar. The problems is I dont find icon ids so they dont look all the same.

   [Application.CommandBars.Add(Name:="BOM", Position:=msoBarBottom).Visible = True
   Set FormatBtn = CommandBars("BOM").Controls.Add(Type:=msoControlButton, ID:=107)
        FormatBtn.Caption = "Format Data"
        FormatBtn.OnAction = "FormatData"
        FormatBtn.Enabled = True]

This part work and my new buttons work when i use same ID:=

Please help me find a link or a better code to change icon

Thank you