Telegram_bot markup menu in one line

How can i make a markup menu for telegram_bot in one row, but not a one column. In telegram documentation: keyboard; Array of Array of [KeyboardButton]; Array of button rows, each represented by an Array of [KeyboardButton] objects. Tried like this: [[IP, Water, Video]], got error in journal: ERROR (MainThread) [homeassistant.components.automation.watervalve_telegram] Error while executing automation automation.watervalve_telegram: value should be a string @ data[‘keyboard’][0]

Found it! Each row have to be in braces. So if [“IP, Water, Video”], it will be one row, [“IP, Water”, “Video”] - 2 rows. Stay here for others.