How to use "popup window" to update a string array

Main page will display section1 - a string array(did not know the size)

Open a popup window:
1. Search result, and select value1 and update section1 adding the new value
2. Search again, and select the research result value and update main page
now main page has two values for sectioin1

...

users can use popup window to do as many times as needed, and main page will be updated accordingly. (All other sections will keep org values), but only section1 will be update.

Thanks,
ly

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bear
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