MPLAB Harmony “interrupt peripheral library” (HEXER)

Hi,I want to use from MPLAB Harmony “interrupt peripheral library” to enabling “external interrupt 0”,At the first write these code:PLIB_INT_SourceEnable(INT_ID_0, INT_SOURCE_EXTERNAL_0);PLIB_INT_VectorPrioritySet(INT_ID_0, INT_VECTOR_INT0, INT_PRIORITY_L..