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?