The question was posted in Studio section of the forum so the more appropriate link maybe to the picture property in the Form Designer part of the Studio documentation
https://4js.com/online_documentation/fjs-gst-manual-html/#c_gst_formdesigner_properties_PICTURE.html (although it should be the same meaning as the FGL documentation link Seb provided, sometimes Studio/.4fd property names and Genero/.per attribute names don't match)
Jeremy: Sometimes it helps to give the underlying business reason of what you are trying to do. So in this case, with PICTURE="## ## ## ## ##" are you inputting French phone numbers?
I defined "INCLUDE = (0 TO 99999999999999)" in include properties, if I'm right, the only values accepted should be beetween 0 to 99999999999999, but i can put for example : "0srtgtrgrs" and the value is accepted.
For the reason why this might be occurring, what is the datatype of the variable? A quick test suggests you'd get the behaviour you report if the datatype of the variable was STRING/CHAR, but if datatype was integer then I get "This value is not amongst the valid possibilities"
Reuben