OPC Value Scaling

[uteCorazza]

Hi,
i'm trying to scale OPC Value just before to send to excel export plugin.
In variable combo i see variable name :
ex. CODESYS.OPC.DA.SCREW_SPEED
I would, before to send excel, to scale this value by a factor 10.

I tried with
CODESYS.OPC.DA.SCREW_SPEED  = CODESYS.OPC.DA.SCREW_SPEED  * 10

with no result

Anyone could help me please?