Help with Acquiring a Continuous Waveform from Siglent sds 1074 cfl

Hi,

I am new to LabView, I have been searching allover to find any information on acquiring  a continuous waveform from Siglent SDS1074 in to LabView.

After so much struggle I was able to have LabView Identify the scope via Visa using SCPI command (*IDN?).

My goal was to acquire a continuous waveform from the scope using the attached VI Bock Diagram image.  The SCPI command, according to the SDS1000 Programming Guide provided from the vendor, is “C1: WF?”.  

Running the attached VI shows a flat line with no errors.  When I randomly stop and start the program I seem to get the square wave from the scope, but it goes away in few seconds!

Please help, if anyone is familiar with VISA coding! 

Thanks in advance!