Printing in Bar code in SAP EHS WWI error

Hi everyone

I'm attempting to print barcode by using barcode.dll provided by external vendor (as explained in sap note n° 25344).

I'm using barcode dll provided by TEC-IT and I correctly see label preview in CG42.

When I attempt to print label WWI server always return  the same error log:

I000     WwiBC.dll: AdapterSap::loadBarcodeLibrary:Cannot load library: BarCode.dll

W607  Bar code library could not be loaded. (3553535).....

Can anyone print barcode succesfully with vendor barcode dll? Could You please help me to solve this issue?

Thanks

Andrea