Error 4 compiling

Compiling '# Firebird [i].mq4'...
'UpperBand' - expression on global scope not allowed C:\Program Files\X-Trader 4 XTB\experts\indicators\# Firebird [i].mq4 (25, 1)
'Percent' - expression on global scope not allowed C:\Program Files\X-Trader 4 XTB\experts\indicators\# Firebird [i].mq4 (25, 14)
'LowerBand' - expression on global scope not allowed C:\Program Files\X-Trader 4 XTB\experts\indicators\# Firebird [i].mq4 (26, 1)
'Percent' - expression on global scope not allowed C:\Program Files\X-Trader 4 XTB\experts\indicators\# Firebird [i].mq4 (26, 13)
0 error(s), 4 warning(s)

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