Removing all text except certain characters

Hello Anonymous 

you can use a combination of Text.PositionOf and Text.Middle. Adding a try otherwise enablse to identifying those rows that don't contain any MA-****

let
	Source = #table
	(
		{"FreeTextColumn"},
		{
			{"xxasdfMA-1450…sdf"},	{"sssktest MA-1111"},	{"kkMA-11558888884"},	{"88oeoeMA-15444"}
		}
	),

	AddColumn = Table.AddColumn
	(
		Source,
		"extract MA",
		(add)=> try
		Text.Middle
		(
			add[FreeTextColumn],
			Text.PositionOf(add[FreeTextColumn], "MA-"),
			7
		)
		otherwise 
		"contains NO MA-"
	)
in
	AddColumn

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Kudoes are nice too

Have fun

Jimmy