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Y param expression for calculator

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Hello , i would like to verify  an idial inductor using its Y-param.i have built a two port system as shown bellow and performed SP simulation for it.

From the direct plot window there are only option to view the Imaginary or the Real part of the Yparam where as in my formula i need the whole Complex number(as shown bellow).

When i imported the imaginary part it showed me  imag(ypm('sp 1 1)).

I assumed ypm('sp 1 1) is Y11. so by this logic my formula need to be expressed as

(ypm('sp 1 1)+ypm('sp 2 2)+2*ypm('sp 2 1))/(ypm('sp 1 1)*ypm('sp 2 2)-ypm('sp 1 2)*ypm('sp 1 2)).

Afterwards i pressesed the button of "evaluate the buffer and express the result in a table" i got the table shown in the end.
The table has only real values, no complex numbers in it .

Where did i go wrong?
Thanks

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