Hello, dear experts, I have a process that is a combination of several types of substances, and the percentage of injection is determined by the operator, and every valve is opened and closed at the right time.  How can I change the order of these materials so that the operator can change the opening and closing order of each valve according to the new formula? For example 1>2>3>4  replace with 1>2>4>3

And the sequence of opening and closing of these valves can be selected as desired

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Split from Changing bit sequence.

Thanks for your help, what logic can be used to create this chart?

Assign for each product a numeric value:
1: product a;
2: product b;
3: product c;
...
9: ....
0: end recipe

When dosing the program must scan each rows from top to bottom of the list and if the desired number is differnet than 0, it's product must be dosed, if no, the recipe is ended.