ModBus tag write not working

I have a Modbus device and can successfully write to Hold Register addresses from the Quick Client:

I build a tag to that address, with Access Rights set read/write :

When I try to change the value I get “Gateway Comm Mode is not Read/Write”

What is happening?

Change your designer into Read/Write mode. It’s the 3 icons under the “Component” menu.

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The default is set by project. You can change it in the project properties.

Boom! Thanks, I had forgotten about that

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