How to use this effect

[MateoxPL]

Hello
How to use this effect

set [all] blocks (from|between) %location% (to|and) %location% to %itemstacks% (using|with) [edit[ ]session] %editsession%

so that it converts blocks in a given region "WorldGuard"
[doublepost=1550414376,1550319393][/doublepost]ref

 

[TPGamesNL]

You get the corners from the region, get a new edit session and set the blocks. But it might be easier to not use an addon and to use https://skriptlang.github.io/Skript/expressions.html#ExprBlocksInRegion instead