If you open a lot of low level chests..

[Swunk]

..and are lazy like myself, this here macro might be for you

Set Last Target
CastSpell Unlock (#23)
Wait for Target
Exec: Last target
Pause .75sec
CastSpell Telekinesis (#21)
Wait for Target
Exec: Last Target

Code:

Assistant.Macros.SetLastTargetAction
Assistant.Macros.MacroCastSpellAction|23
Assistant.Macros.WaitForTargetAction|30
Assistant.Macros.HotKeyAction|1058|
Assistant.Macros.PauseAction|00:00:00.7500000
Assistant.Macros.MacroCastSpellAction|21
Assistant.Macros.WaitForTargetAction|30
Assistant.Macros.HotKeyAction|1058|