Starting with 4D v19R4, the colon character ":" will no longer be allowed to be used in any part of a variable's name.

For exmaple the following three variable names will no longer be allowed:

:myVariable
my:Variable
myVariable:

It is suggested that before moving to 4Dv19R4 or above, this includes 4Dv20, that variable names failing this new requirement should be addressed. This can be done using the "Find in design" 4D developer feature limiting the search to "Variables" "Containing" colons:






The search will return all of the variable names that need to be addressed to remove any colon characters.