Regular expression for middle of string

Bit of background. I'm getting both text (can contain numbers) and data (only numbers) from serial. Since I don't know which I'm receiving and when it starts/ends, I'm making the sender send "textSTART###textSTOP" where "###" is what I want to extract. ### can contain text, numbers, new line, carrige return or whatever.
The same for data&colon; "dataSTART###dataSTOP", where ### contains only numbers.
I think I should use Match Pattern, but I don't know how to make my regular expression.
Any help is appreciated.
Solved!
Go to Solution.

If the string does not contain anything outside these "delimiters" and there are exactly two per string, you could simply use scan strings for tokens. You can also add the "dataSTART/STOP" delimiters to the array to make it universal and look at the beginning of the raw string to determine if you are dealing with a "data" or "text" message.
Here's a quick draft.
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