<ValidatePinModal
onSubmit={(code) => this.onSubmit(code)}
// ref='ValidatePinModal'
ref={ref => {this.ValidatePinModal = ref}}
/>
must has onOpen() func
call this: this.ValidatePinModal.onOpen()
another way:
<ValidatePinModal
onSubmit={(code) => this.onSubmit(code)}
ref='ValidatePinModal'
/>
call this: this.refs.ValidatePinModal.onOpen()