Trouble Parsing .meas command

Hello I am trying to do Frequency Response Analysis of my Buck converter.
I am using .measure command for different values of frequency (Fac). But after successfully simulating for all values, in the end it is giving 'Trouble parsing .meas error.

Ar the same time when instead of sweeping the frequency I simulate for individual values of frequency it gives result.

Message from Post process tab as it is not allowing me to add multiple images
[.meas gain fra fac v(in) v(out) from (t0+4/fac):
-10.0232dB -115.32° ]

Can somebody help me figuring out this issue?

Thank you very much in advance for your concern.

I am not sure what went wrong in your case.
Here is an example set up with conditions similar to what you did.

.meas - fra - 04 Parameterized Tstart.qsch (5.1 KB)

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