Hi,
If you try to extract a substring from a string, you can define any delimiter you want (See example below) 
Word( 1, "AAA:BBB:CCC", ":" )
If you need to import a text file with ":" as a delimiter, I suggest uploading the raw text into one column and splitting it using the Column Utilities > Text to Columns (defining the column separator as ":").
If neither approach meets your needs, please share an example of what you are trying to achieve.
 
Best,
TS
					
				
			
			
				
	Thierry R. Sornasse