MATLAB: How to create a matrix with real and complex values in Simulink

Question

I am trying to create the matrix representation for some Quantum gates and I am having trouble creating a matrix with complex components.

To create matrices with Real components I have been creating vectors of constant blocks with the MUX block and then concatenating MUX blocks to create a matrix. When I try to do that with a complex constant block I receive the following errors.

"Complex signal mismatch. Input port 1 of 'untitled2/Mux2' expects a signal of numeric type complex. However, it is driven by a signal of numeric type real" and "Complex signal mismatch. Output port 1 of 'untitled2/Constant4' is a signal of numeric type real. However, it is driving a signal of numeric type complex"

Is there a way to do what I am trying to do? For example create a matrix that looks like the following,

[1 0]

[0 i]

Thank you.

Answer 1

https://www.mathworks.com/help/simulink/slref/realimagtocomplex.html

This block can be configured with a signal as the real part, and with the constant 0 as the imaginary part.