How to Calculate Power Sum Crosstalk in HFSS

The power sum crosstalk can be calculated and plotted in HFSS by creating a rectangular plot and inputting its expression. 

Example: 

10*log10(mag(S(Port3,Port1))^2 + mag(S(Port4,Port1))^2 + mag(S(Port5,Port1))^2 + mag(S(Port6,Port1))^2 + mag(S(Port7,Port1))^2 + mag(S(Port8,Port1))^2 + mag(S(Port9,Port1))^2 + mag(S(Port10,Port1))^2)