B4J Code Snippet String to Number (or remove all non-numbers)

I couldnt find this on the forum. I needed a way to extract the numeric portion of a string that could be alphanumeric.

Dim alphanumeric As String = "This string contains (12345.67) some numbers"

Dim justnumbers As String = Regex.Replace("[^0-9.]",alphanumeric,"")

Log(justnumbers) 'Shows 12345.67