Array Doesn't Reinitialize

In my experiment system I want to generate an array of 4 columns by a variable number of rows that will be written out to a DAQ unit and drive the experiment.  My current efforts creates the array I want for the first pass but additional calls append to the initial array rather than reinitialize and start over.

The attached vi has a lot of complexity for things I plan to do after I get past this block.  The point of interest is the FOR/NEXT loop in the "Start" state.

How do I get the array reset?

Thanks for your help.

Bill Monette

Indiana University, School of Optometry