[Simulink] How to change the type of the number in "chart"?

I want to make a simple countup model in "chart" block (state machine) like the attached picture.

However, there is an error when I simulate this model.

The problem is the types of the parameter 'cnt' and the added number "1" are different.

I set 'cnt' "fixdt(0,4,0)", so also want '1' to be fixdt(0,4,0), but I don't know how to set the type.

How can I do this?

Best,

[Sanju]

Can you please share your model?

[takaka]

This is the simplified model.

Best,

Answer 1

[Fangjun Jiang]

In the chart, add a data, specify the scope as "Constant", name it ConstantOne, specify its value and data type. It is a good practice not to use fixed numerical number.