You just need to declare them as normal numbers in either ffish script or actionscript:
Code:
FIELD_TYPE_DECIMAL = 0
FIELD_TYPE_TINY = 1
FIELD_TYPE_SHORT = 2
FIELD_TYPE_LONG = 3
FIELD_TYPE_FLOAT = 4
FIELD_TYPE_DOUBLE = 5
FIELD_TYPE_NULL = 6
FIELD_TYPE_TIMESTAMP = 7
FIELD_TYPE_LONGLONG = 8
FIELD_TYPE_INT24 = 9
FIELD_TYPE_DATE = 10
FIELD_TYPE_TIME = 11
FIELD_TYPE_DATETIME = 12
FIELD_TYPE_YEAR = 13
FIELD_TYPE_NEWDATE = 14
FIELD_TYPE_ENUM = 247
FIELD_TYPE_SET = 248
FIELD_TYPE_TINY_BLOB = 249
FIELD_TYPE_MEDIUM_BLOB = 250
FIELD_TYPE_LONG_BLOB = 251
FIELD_TYPE_BLOB = 252
FIELD_TYPE_VAR_STRING = 253
FIELD_TYPE_STRING = 254