Now, game isn't pausing, but nothing happen.
I edited it to:
'---------------
#org 0x800240
msgbox 0x880043C MSG_KEEPOPEN '"TEST!/n IT'S WORKING!"
checkflag 0x829
if 0x0 goto 0x880026F
checkflag 0x10A
if 0x1 goto 0x880026F
applymovement MOVE_PLAYER 0x8800272
waitmovement 0x0
msgbox 0x880041C...