some tags are not refreshing on DskDevice IO Device

Hi All,

I cant figure out why some tags doesnt refresh.

I am reading an ION meter via modbus tcp, and Total Power data is coming on 2 registers. So, in variable tags i have one for High Value Register and other tag for the Low Value register. and via cicode i make the calculation formula Value=High Value * 65536 + Low Value. I have other variable tag on DskDevice L15 named Value. but this isnot refreshing while on runtime. also if i make other text with the same expression tag "Value=High Value * 65536 + Low Value".

could someone help me please

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