Vertical Alignment for Line Up Box

[#1]

I'm combining text box, number edit box and button box in a lineup box alignment but ended up getting a display which is not necessarily straight (see snapshot). Is there a way to address this so that each box are align proportionally ?

new window("Test",
	line up box(ncol(3),
		Text box("Variable 1"),Number edit box(0),Button box("Create Column"),
		Text box("Variable 2"),Number edit box(0),TExt box(""),
		Text box("Variable 3"),Number edit box(0),Button box("Create Column")
	)
)

[#2 · Accepted solution]

The different objects have different dimensions, so what I do, is adjust them by using spacer boxes

new window( "Test",
	line up box( N Col( 2 ),
		V List Box(
			Spacer Box( size( 0, 2 ) ),
			H List Box(
				Text Box( "Variable 1" ),
				Number Edit Box( 0 )
			)
		),
		Button Box( "Create Column" ),
		H List Box(
			Text Box( "Variable 2" ),
			Number Edit Box( 0 )
		),
		Text Box( "" ),
		V List Box(
			Spacer Box( size( 0, 2 ) ),
			H List Box(
				Text Box( "Variable 3" ),
				Number Edit Box( 0 )
			)
		),
		Button Box( "Create Column" )
	)
)