Use this open another screenwith startValue. If you send Yaillist , in another screen also you will get it as Yail list, After getting into the next screen parse into simple items using select list item list index method
Where should I put this block? The first page or second one
Already you are using one event block in ListView1 After picking where you replace the existing block with this. I showed Open Screen2 but in your block you mentioned it as Screen3. So see to that also.
So in Screen3 when screen jniti where you should use getstartVakue which will give you this Yaillist