agilent 33220A

Dear all

I would like to control the function generator, Agilent 33220A using attached vi. But, it needs a subvi as bellowed. Once I tried to skip those subvi, it shows an error. I would like to generate waveform of square at 20 kHz, 20% duty cycle, amplitude of 2.5 - 3.0 V. Could I get a help? Please, refer bellowed subvi.

Loading: <instrlib>:\Agilent 33XXX Series\Public\Action-Status\Enable Output.vi

Loading: <instrlib>:\Agilent 33XXX Series\Public\Close.vi

Loading: <instrlib>:\Agilent 33XXX Series\Public\Initialize.vi

Loading: <instrlib>:\Agilent 33XXX Series\Public\Configure\Configure Standard Waveform.vi

Thank you.