ADS - How to display a point

Hi ,I have a simple question .How to display a point on smithchart in the Data Display of ADS. What is the correct form of my data?Such as :
A1=20+j*20
What form I should write in the Eqn ?If display A1 directly ,A1 would be plot in a wrong place .

Ths~~

A1 is plotted in correct point you specified.
It seems you are misunderstanding Smith Chart.

Smith Chart expresses reflection coefficient not impedance.

If you want plot Zin=20+j*20 in Smith Chart with reference impedance of Z0=50Ohm, you have to plot A1=(Zin-Z0)/(Zin+Z0).