Attribute Modify Library

run the /function attribute:uninstall to remove the scoreboards and storage data.

add value

/function attribute:modify {attribute:"generic.max_health",value:10}

remove value

/function attribute:modify {attribute:"generic.max_health",value:-10}

works with all attributes(haven't tested them all, but it should)

works up to the 6th decimal

/function attribute:modify {attribute:"generic.movement_speed",value:0.000055}