how to change grass into ore of choice minecraft 2024

in this video i will show you how to change a block of your choice into an ore of your choice using command blocks this can change your whole wold terrian into a certen ore on if u want u can change it into anything u chose
Works on BEDROCK
Works on PE
Works on JAVA
HOW TO GET A COMMAND BLOCK
START A WIOLD WITH CHEATS AND HAS TO BE A REGULAR WORLD CANT BE FLAT
type /give @s command_block
right click on command block to open
HOW TO USE CODE
TYPE /execute as @p at @s run fill ~-15 ~-15 ~-15 ~15 ~15 ~15 (BLOCK OF CHOICE) replace (BLOCK OF CHOICE)
FOR EXAMPLE IF U WANTED TO CHANGE GRASS INTO DIAMOUNDS TYPE
/execute as @p at @s run fill ~-15 ~-15 ~-15 ~15 ~15 ~15 (DIAMOUND_BLOCK) replace (GRASS_BLOCK)
EXAMPLE 2 LETS SAY U WANTED TO CHANGE GRASS INTO SNOW
/execute as @p at @s run fill ~-15 ~-15 ~-15 ~15 ~15 ~15 (SNOW) replace ( GRASS_BLOCK)