Randomization of a variable before all other variables

In reply to chr_sue:

Using solve a before … applies only the constraints to a first.

If the constraint is applied first, doesn’t it essentially mean that the variable is resolved before any other variable?

If you want to randomize a variable with constraints before the other variables you should do this in a task which is called prior to the body task. Reasonable tasks are pre_body or pre_do.

How is it possible to randomize a single variable from the pre_body task of sequence and then randomize all other variables in the body task?