Requesting "Help" with figuring out how text inputs with math inputs work with "execute command/" procedures.

Hi, I've been trying to figure out for at least an hour why this arrangement of text and math inputs doesn't work using the "execute command/" procedure. https://imgur.com/a/mX7FP8m <<

I have been planning to create a 1.20.1 mod (Java) using MCREATOR to allow mobs to give OP weapons on death. However, when I use Mcreator's custom "loot_tables" it makes it when an entity dies which causes it to drop everything that's added to the assigned "created" loot pool; (not one thing at a time). Then I tried different parameters and item weight values to get what I wanted, but nothing really worked out using Mcreator's custom "loot_tables". So I ended up trying Mcreator's "command" and player procedures and there forth I ran into this issue. [ As well as implementing the reason for this forum. ]

Is It just the way it getting executed or is it MCREATOR just being weird? Or am I just being stupid?

{Below is the procedure ".ptpl" download shown through this link or the one in bold (above^) for those who want to test it/use it }

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