How to disallow string in block mask parameters?

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How can I apply a constraint to a block mask parameter so that when a string is entered in the dialog block mask parameter, it is shown as an error? I could not find any option in Mask Parameter -> Constraint.
Also, how can I get the "evaluated" value of the block mask parameters in Initialization Commands? I am entering `b = get_param(block_handle, 'myparam1'), but getting a string for it. I want to get a double value and then compare to some value to show some error message.

Answers (1)

Sanman on 27 Jan 2022
Hi Soham,
Using mask parameter constraints, you can set the datatype you want for the mask parameter. I hope the following documentation can help you with that.
For your second question, you just need to use the function "eval" to do that.
b = eval(get_param(block_handle, 'myparam1'))
You can find the documentation for the function here -

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