Selection.MoveEndUntil (Word)

Moves the end position of the specified selection until any of the specified characters are found in the document.

This method returns a Long that represents the number of characters by which the end position of the specified selection was moved. If Count is greater than 0 (zero), this method returns the number of characters moved plus 1. If Count is less than 0 (zero), this method returns the number of characters moved minus 1. If no Cset characters are found, the selection isn't changed and the method returns 0 (zero). If the end position is moved backward to a point that precedes the original start position, the start position is set to the new ending position. If the movement is forward in the document, the selection is expanded.

MoveEndUntil (Cset, Count)

With Selection 
 .MoveEndUntil Cset:="a", Count:=wdForward 
 .MoveRight Unit:=wdCharacter, Count:=1, Extend:=wdExtend 
End With

Arguments

The following argument is required

Cset (Characters) - One or more characters. This argument is case-sensitive.

Optional arguments

The following argument is optional

Count (Long) - The maximum number of characters by which the specified selection is to be moved. Can be a number or either wdForward or wdBackward. If Count is a positive number, the selection is moved forward in the document. If it is a negative number, the selection is moved backward. The default value is wdForward.