Programmatically changing the x range on a waveform graph

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I'm reading Data over a GPIB in labview into a wave form graph. I would need to constantly change the range of the graph on the X axis. I have done some searching but haven't found a way  to programmatically change it with property nodes and controls can anyone help?

[NIquist]

Property Node:  X scale > Range > Maximum (or whatever)

[*E*]

thank you for quick response.