Solved Block location

[Jeroeno_Boy]

So i want to set Yellow concrete to green concrete, but it doesnt place, no errors

set {_Block} to block at location at X-location of event-block + 5, Y-location of event-block - 1, Z-location of event-block in world of event-block
                        message "%Location of event-block%"
                        message "%{_Block}%"
                        message "%Location of {_Block}%, %World of {_Block}%"
                        if {_Block} is a yellow concrete block:
                            message "8"
                            set {_Block} to grass block

 

[Vrganj]

set {_loc} to location at X-location of event-block + 5, Y-location of event-block - 1, Z-location of event-block in world of event-block
if block at {_loc} is a yellow concrete block:
    message "8"
    set block at {_loc} to grass block