How work with tow select list

Dear All
i have tow select list item
first one is country
and the second one is city
how can i get all city for selected country?
please help

Hi,
The simplest way
a. Make Country a select list with submit.
b. Make City a slect list based on query and in the query add the condition
and country = :P1_country -- where p1_country is the item in step a abovec. Make City conditional by adding a condition on the item of the type Value of Item in expression 1 is not null, and in expression 1 enter p1_country.
This way when the user lands on the page only Country will display. Once cuntry has been selected the page will submit and now the City item will be displayed with the values returned by its query.
Regards,

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