Returns the value of the specified field as num-char array. The charBuffer will be filled by string representation. The remaining places in the buffer will be filled with spaces. In case the buffer too small the function will return RFC_BUFFER_TOO_SMALL.
Supported field types:
RFCTYPE_CHAR
RFCTYPE_STRING
RFCTYPE_NUM
RFCTYPE_DATE
RFCTYPE_TIME
RFCTYPE_INTx
RFC_RC SAP_API RfcGetNum (DATA_CONTAINER_HANDLE dataHandle, SAP_UC const* name, RFC_NUM *charBuffer, unsigned bufferLength, RFC_ERROR_INFO* info);