Obtaining each value of an struct array with fields in Simulink

In simulink I have a struct array like called key_frame:

12×1 struct array with fields:

frame_value
interp_function
RGB

This struct is stored as a Parameter. I have access to it in my model by using a constant defined with the Constant value expression:

[MyParamParam.key_frame.frame_value]

This gives as a result obtain the value of each of the frame_values

1×12 uint8 row vector

     5     6     7     0     4    10    11    12     8   200     0     0

This approach is not valid when code generation is needed as "[X]" is considered a category 4 operator and therefore it is not supported for code generation.

Is there a simple way to obtain each one of the frame_value in a vector in simulink?