Alfred Terminal / Shell Command does not work

In Alfred, if I type > ls must open iTerm2 with that command. Well, does not work for me.

In Application if I select Terminal instead of iTerm2, works.

If I select Application → Custom, it shows the applescript code you can see below and works.

If I select Application → Custom and modify the tell application line replacing Terminal with iTerm, does not work.

If I open Script Editor and type the following applescript code, does not work:

tell application "iTerm"
    activate
    do script "ls"
end tell

If I remove do script line open iTerm.

Any ideas of why do script line does not work with iTerm?