Re-lock RAL model

Hi
I’m using some ral model at my env.

at simulation beginning i’m using some regmap but at some simulation event of the test I want to change the model by adding a submap to model’s reg_map.
I know that once the model is locked, it build all it’s address map and therefore cannot be modified.
is there any hook to or workaround to unlock a model, change it’s configuration and the relock it?