Selecting Specific option

[rasselll]

<ModalDropdown options={['Edit', 'Delete']}
onSelect={(idx, index) => this._dropdown_6_onSelect(0, "Edit")}

_dropdown_6_onSelect(idx, value) {
alert("Edit");
}

Not sure how selecting a specific option is supposed to work, i tired selecting the Edit option, although the above code just makes the function alert for both options. How do i make it so the function only happens for a specific option such as "Edit"