MT4 · Runtime errors
MT4 4009 · Not initialized string in array | YI GOLD
ERR_NOT_INITIALIZED_ARRAYSTRING
Official meaning
Not initialized string in array
Possible causes · YI GOLD suggestions
Array size, index, type or series orientation violates function requirements.
Troubleshooting · YI GOLD suggestions
Check length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access.