I am building an userform and would like to change the mouse icon to something custom. I change the MousePointer field to 99 - fmPicture but then every type of image I try to upload to the MouseIcon box I receive an error that the picture type is invalid. I have done quite a bit of looking and from the information I have found it looks like this should be a bitmap or a cursor file type. I have tried both of these and neither worked.

Here are the file types I have tried:
.bmp
.cur
.ico
.jpeg
.png


I'm not sure if this will make a difference, but I am on Excel 2011 for Mac. Any and all help is greatly appreciated.