Cortiel--
I just tried the code:
this.SetRowHeight(lnWb,lnSh1, 6, 25)
In the method Demo() of the class for sheet 1 and the row height is set without any errors. I will need your XLSX file to be able to determine the cause of the problem. Also, please indicate which sheet number you are trying to set this value for the row height.
Greg
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