# ActivatePaneByIndex *Since: 20220319-142410-0fcdea07* `ActivatePaneByIndex` activates the pane with the specified index within the current tab. Invalid indices are ignored. This example causes ALT-a, ALT-b, ALT-c to switch to the 0th, 1st and 2nd panes, respectively: ```lua local wezterm = require 'wezterm'; return { keys = { {key="a", mods="ALT", action=wezterm.action{ActivatePaneByIndex=0}}, {key="b", mods="ALT", action=wezterm.action{ActivatePaneByIndex=1}}, {key="c", mods="ALT", action=wezterm.action{ActivatePaneByIndex=2}}, } } ```