Resource List is too long errors- Ole

[HMS Software]

I have a Delphi Application that gets a 'critical error' when I try to use
the following OLE command and the value of the resource list exceeds 256
characters and I'm trying to add a new resource to the list that has not been
assigned yet.

Is this a known limitation?
Is there a workaround?
Is there some documentation that I can show to my client?

SetTaskField [Field:='Resource Names', Value:=fRes_Codes, TaskId:=lUniqueID,
ProjectName:=fProj_Name];