Why don't i get a data type mismatch error?

Hi,

following is inside my simulink model:

• a Stateflow chart, inside this chart:
• a 2-dimensional array a(5,5), data type specified to fixed point fixdt(1,7,0).

Assigning a wrong fixed point values to the whole array leads to a data type mismatch error:

• a = fi(zeros(5,5),1,8,0); // error due to word length mismatch

However, assigning individual values with a different fixed point value doesn't give any error:

• a(1,1) = fi(0,1,8,0); // no error

My expectation would be to get a data type mismatch error, too.

Is there any setting to enable a strong data type check, to get a data type mismatch error here?

Matlab version: 2019a