Parameter issue: choice list

On the parameter selection of an algorithm when we have the choice that is selected

2 issues here:

a) In the choice list we can have string, int, float or anything though the type selected is int for example

b) If we have entered strings for example, we can change to another type and the choice list is still available.

For both of these bugs, the valid flag is also still there.

In other words, here we have another input validation problem here.