I try to compilate this plugin online ( amxmodx webcompiler ) but i have some error
/tmp/textjv7iPa.sma(326) : error 017: undefined symbol "get_user_button"
/tmp/textjv7iPa.sma(327) : error 017: undefined symbol "get_user_oldbutton"
/tmp/textjv7iPa.sma(32

: error 017: undefined symbol "get_entity_flags"
/tmp/textjv7iPa.sma(32

: error 029: invalid expression, assumed zero
/tmp/textjv7iPa.sma(32

: warning 215: expression has no effect
/tmp/textjv7iPa.sma(32

: error 001: expected token: ";", but found ")"
/tmp/textjv7iPa.sma(32

: fatal error 107: too many error messages on one line
How i can solve this?