Starship Corporation

When in the middle of creating a new ship, I decided to start a new and then when clicking the button got this..


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ERROR in
action number 1
of Destroy Event
for object obj_room_below_fixed:

Error in code at line 4:
if plug.gridobject != noone
^
at position 12: Unknown variable gridobject

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If ( x = 1 && y = 1)
{ PooIsEaten = true; }
Else
{ PooIsEaten = false; }