I understand that you are trying to pass parameter values from a masked model to same masked submodels by promoting the values.However, you are facing a name clash between the variables in the subsystem, as they are based on the same model.
To solve this issue,you can try "Referencing block parameter values using variable names" approach.
With this approach, you can add an Edit parameter to the mask dialog box and pass values to the block parameters through it. The values that you provide for the Edit parameter in the mask dialog box automatically become associated with the block parameter by using the techniques described in "Symbol Resolution".
To learn more about this approach and Symbol resolution , please refer to the following documentation:
- https://www.mathworks.com/help/releases/R2023a/simulink/ug/calculate-values-used-under-the-mask.html
- https://www.mathworks.com/help/releases/R2023a/simulink/ug/resolving-symbols.html
However the above approach works only if the parameters are "Edit parameters".
I hope this helps! If not, please share the model and the name clash message for further understanding.
