In the GDL Reference Guide > Strings (p20 AC20 version) says these characters can be used:
", ', “, ’, `, ´
so you should be able to find one that works in your instance.
David
David Maudlin / Architect www.davidmaudlin.com Digital Architecture AC29 USA Perpetual • Mac mini M4 Pro OSX15 | 64 gb ram • MacBook Pro M3 Pro | 36 gb ram OSX14