Tag Bad quality , replace null value to zero

Hi there.

I have created a memory tag “tAirFlow” composed of the next formula (tags):

{[.]Machine/Process/CoolerAirFlow_01}+{[.]Machine/Process/CoolerAirFlow_02}+{[.]Machine/Process/CoolerAirFlow_03}+{[.]Machine/Process/CoolerAirFlow_04}+{[.]Machine/Process/CoolerAirFlow_05}+{[.]Machine/Process/CoolerAirFlow_06}+{[.]Machine/Process/CoolerAirFlow_07}

When machine is disconnected of the network, tAirFlow = null. Is there a way to replace null value to zero automatically?. I need to use that tag for another arithmetic calculations.

Thanks in advance.

Coalesce might be what you want: docs

Thanks Kathy for your support. It works :grinning:

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