Adjusting an Array Range in Calc

[Lars Callenbach]

Hello,

I have a working plugin for Quantlib. Scalar results of the library (single numbers) are working fine. 
If I have a Matrix result (array range formula) than it is not possible to change the size of the array. 
What happens if I try to change the array range: the name of the formula changes from upper-case to lower-case (this is simply an indication that the function is not known) and an error message appears (error 508).

Help appreciated.

Regards,
   Lars