Changing propagator's gauge in FeynCalc 10.0.0 and FeynArts 3.11

[Matoro365]

Hi, I created a model file for FeynArts using LanHEP in the unitary gauge, but when I tried to do some symbolic amplitude calculations in FeynCalc, but the propagators where in the Feynman's gauge.
I learned that \xi = 1 is the default gauge and I tried to change the gauge by the manual's way, but it didn't work.

I need help with that.
I'm using FeynCalc 10.0.0, FeynArts 3.11 and Wolfram Mathematica 12.3.

[vsht]

Hi,

the gauge is essentially set when you use FeynArts' CreateFeynAmp (cf. Section 6.2 in FeynArts manual). If it doesn't work then probably there's an issue with the model.