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daq assistant

I am using a 6230 daq card and trying to write 1 bit (p0.0). I use daq assistant to create the task ok , and the express vi is placed onto my block diagram. When I try to  just tie a boolean T or F to the data input I get an error. The only way I seem to be able to control it is by creating an array constant and using 1 element of the array. I really want to control it from a user switch on a front panel or thru some other decision tree that results in a boolean T or F to go to the data input. Anyone know what I am doing wrong or have any hints?
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You can work around this by using a Build Array function and connecting a boolean to its input and wire its output into the data input of the DAQ assistant.
Mark
NI App Software R&D
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Also, see the attached VI for a demonstration of this. 
Mark
NI App Software R&D
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got it now - thanks for your help!
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