How do I update blocks where when i click the checkbox i can update the list?

[Ash_Sha]

[TIMAI2]

You will need to get your revised list and apply it to your listview again.

[Ash_Sha]

how when I click the checkbox and the update button the message said: The operation replace list item cannot accept the arguments: , [7], [com.google.appinventor.components.runtime.CheckBox@a08693], ["water6water6"]
Note: You will not see another error reported for 5 seconds. i use
compcreator - checklist.aia (61.6 KB)
i just need to add the update button or when i click the image i can update the list

[ABG]

Help To simplify Code

This sample should help you learn Lists: This simpler project shows how you can use two List Pickers to select players in order: multiselect.aia (3.5 KB)

You can avoid extensions by using two list pickers.

[Still_Learning]

@Ash_Sha

The operation replace list item cannot accept the arguments: , [7], [com.google.appinventor.components.runtime.CheckBox@a08693], ["water6water6"]

Yes it does. Because in this code, the index place expects number but see what have you added. Try to use number here (suggestion - try with index is in the list)

[Ash_Sha]

I am sorry I still do not understand can you visualize the block for that part for me