Yanfly Row Formation Lunatic Help

Can anyone help me get a notetag to work for Yanfly's Row Formation plugin (http://yanfly.moe/2016/01/02/yep-54-row-formation/)? I've defined two rows and am trying to make a skill (Switch Row) that will switch the user from the front row to the back or vice versa, depending on the user's current row. In the skill's Note field, I've entered the following:

<Custom User Row>

if (user.row() == 1) {

row += 1;

} else {

row = 1;

}

</Custom User Row>

This should work, based on the plugin's documentation. But when I use this skill in battle, I get a ReferenceError saying "user" is not defined. Here are all the plugins I'm using:

YEP_CoreEngine

YEP_BattleEngineCore

YEP_X_BattleSysCTB

YEP_X_VisualHpGauge

YEP_RowFormation

All are up to date and are installed in that order. So how/where do I define "user"? Thanks for your help!