Check if block is on another block, wait, then check again

[Axon]

my english ain't good, so I will try to describe my problem in as simple as possible:

what I want to do:

if a block (campfire in my case) is placed on bedrock
send message "ABC"
wait about 30 seconds
if the block is still on bedrock
execute command /TWin
else
execute command /CWin

my code which does not work (of course):

on place of campfire:
  block below is bedrock
  message "bomb has been planted" to player
  wait 10 ticks
      if block below is bedrock
        execute player command "TWin"
      else
        execute player command "CWin"

 

[oToghty]

please format your code by clicking there and then on code blocks