Drop down box trouble

Hello,

I’ve got quite the same issue, not an error but the execution can’t go on because the list of values is dynamic (postal addresses). For some websites it works by inserting a key action “Tab” in the script but for some other object types only the mouse action works so it can’t be managed in the test case. Is it possible to choose always the 1st item of a value list ? If so could you please tell which action to call ? (please consider I do not have any dev skills)

Many thanks