How to modify Attributes on Command? (have Plugins and project download link)

[Mcreator Attributes Plugins]
https://mcreator.net/plugin/88645/azziers-tools

I added Attack Damage Attributes GUI in Lore
But in fact, my attack power damage has changed
Lore Attributes GUI will not change
(Because this is just the text I entered, there is no variable)
How should I make new modification of ATTRIBUTES
EX: Testsword / Basedamage Is 5
Command: /RPG Damage 5 10 10
(The Damage of the Item on the hand is modified from 5 to 10)
What should I do?
McReator Attributes Plugins is a new option to set

You can download with reference to my project

https://drive.google.com/file/d/1KhTE-CNllEsP_Z_ilEv1EkHSB-8Jcchi/view?usp=sharing

Thank you