'BLE_GAP_CONN_SEC_MODE_SET_OPEN' could not be resolved in the eclipse.

[J.Kwon]

This message appears :

Field 'BLE_GAP_CONN_SEC_MODE_SET_OPEN(&hrs_init.hrs_hrm_attr_md.cccd_write_perm)' could not be resolved

but the build and flash were successed and it works well.

Is it OK..?