IF function with signalDI

Hi,

I am currently working on the communication between an Allen-Bradley PLC and an ABB teach pendant. I am activating the digital input (Ri_09) of the abb from the plc using device net communication.  The Ri_09 becomes 1 in ABB so all good. But then I am try ing to say : if Ri_09 equals 1 then call that routine. My problem is that the IF function doesn't let me put the ''=1'' after ''Ri_09'' and it says that the data type should be a bool ... From there, I am lost and I need help to find a way so that the Digital inputs work with the IF functions. 

Thank you !

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