missing function argument at _@_
in expression "(pow(2,_@_))"
    (parsing expression "(pow(2,))")
    invoked from within
"expr (pow(2,[::ap::config::get patches map_y]))"
    invoked from within
"if { [ string equal "$arg1" "load" ] } {
        if { [ string length $arg2 ] > 0 } {
                set commandline "$openttd -c $inifilename -D -g $arg2"
                ::ap::game::..."
    (file "./autopilot.tcl" line 83)