Currency symbol inside input box

This post: https://mxforum.mendix.com/questions/8465/Currency-viewer-for-Decimal gives a good sollution if you want to place an currency value before some data. It works on all location except on a input field. It will place the currency sign on top of the input box instead of inside. Anybody a trick to place the currency inside the inpubox?

Regards,

Ronald