Items with potion effects

[proper hazel]

I need some help, I need to know how to make having an item equipped give you potion effects, and also how to make it conditional, for example that you crouch down with an item in your hand and it gives you resistance until you get up. Please

[manic shoal]

This page should be helpful, just change some of the queries in it to test the mainhand rather than the armor slots: https://wiki.bedrock.dev/items/equipped-item-commands.html

You can also use q.is_sneaking to make it only work when you're crouching