Basic has UDT. This feature seems to be rarely used, but would be expedient in specific cases.
However, variables of such types are always treated as references (ByRef) even by user defined subroutines where the respective prameters are qualified as ByVal. The reference also is persistent if the routine does Redim Preserve the parameter or a variable to which it was assigned.
Since there also is no way to get info about the fields of the type, it seems there is no way to get a deep copy breaking the inherited reference by a Function or a Sub. An assignment to any field of the intended copy will also afflict the respective field of the original: Only the reference was copied.
Is there remedy?
Related problem with arrays: Apache OpenOffice Community Forum - OpenOffice BASIC: Create an independent copy of an array. - (View topic)
A class module might help. I never used them with StarBasic. Think of multiple instances of the same module, each instance initialized with its own set of variable values.