USB6356 to control PGAs via SPI

I need to control two PGAs via SPI protocol with my USB 6356. I have attached my code for this, my problem is that the PGA does not seem to be changing gain or doing anything at all. I am wondering if it has anything to do with the way I am sending the signal from the 6356 in Labview? Please help!
Attachments:
conditionalExecute PGA test.vi ‏64 KB

Hi mc11
There are some missing VIs... With no changing in the gain, do you mean that the SPI waveform signal is not changing?

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USB6356 to control PGAs via SPI

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