execute, block, bug!!

When using the execute command, there is a bug that for some reason the command cannot be used.

execute if block ~ 1 ~ bedrock 0 as @a[tag=!creater] at @p run gamemode a @p[tag=!creater]→〇
execute if block ~ 2 ~ bedrock 0 as @a[tag=!creater] at @p run gamemode a @p[tag=!creater]→×

Perhaps when using other execute commands, the numerical value will be fixed and it will not be possible to specify another block.

(I translated from Japanese, so I apologize if there are any mistakes.)