How can you interact with attributes from other mods?

Hi, I would like to know if there is a way that I can change the value of an attribute from another mod? So far, when I have needed to do something with attributes, I will use a hidden potion effect, to make it dynamically changeable, as items have no direct attribute support, however, potion effects, and attribute procedures, have no built-in support for attributes from other mods. I would like to know of either the code to directly modify attributes from other mods, or a plugin for the newest MCreator version that has support for attributes from other mods, such as what https://mcreator.net/plugin/103319/attributes-nerdy-edition did for older versions before some attribute support was added in base MCreator.

To summarize, how can I give the player a boost to an attribute from another mod? I am willing to code if somebody can tell me what I would need to do to properly import and reference the attribute.