Milad Vahman, you may want to read through this patent:
https://patents.google.com/patent/US6562877B2/en
Although the Authors focus on the hydrolysis of polyesters, they mention that polyamides are dissolved in their conditions rather than being decomposed. As such, it would appear that polyamides are resistant to both hydrogen chloride (gaseous) and hydrochloric acid (aqueous) to some extent.
You have probably read the paper (link enclosed below) dealing with decomposition of polyamides caused by HCl formed in situ from PVC. This is a case of extreme conditions being applied, but the boundary between stability and decomposition may be a question of temperature.
Article Thermal decomposition of polyamides in the presence of poly(...