Hello, I am new in this forum.

I'm using Hammer and I have a question about nested instances.
Why KeyValue "Fix Up Name" in func_instance name not only an entities inside, but also parameters in func_instance_parms? This generate an error in game like this

Quote:
Dynamic prop SomeName-PanelName-model_arms: no sequence named:SomeName-ramp_90_deg_open

...so model arms used in panels can't work properly. SomeName is not a name of panel instance but name of instance that is using that panel inside. Nested func_instance with panel skips name of panel, but last instance can't skip a name SomeName in parameter used in func_instance_parms.
What I should do to use string "ramp_90_deg_open" instead of "SomeName-ramp_90_deg_open" that is generated automatically? Using func_instance_parms in all nested instances generate some weird problems and I think that I don't need to change parameters in last instance, so that entity is used only one in panel instance.

Refer to the name of your prop directly. You could either refer to it as SomeName-PanelName-model_arms or edit the instance and place a @ before your panel name and just reference @model_arms.
e.g. (logic_relay) OnTrigger -> SomeName-PanelName-model_arms -> SetAnimation -> ramp_90_deg_open
e.g. (logic_relay) OnTrigger -> @model_arms -> SetAnimation -> ramp_90_deg_open

Do not go through the func_instance_io if you want to set an animation, everything would try to be prefixed.

Also, don't nest parms. Ever. They all get put in the top-level instance only.