I've done what you're trying to do with these 4 nets. Here, I'm pulling a weight string from an RS232 connected scale. This string has a period in it that I need to remove.
First, you define your date sting vector's length. Second, you'll need to convert your forward slash (string) to ASCII.
Third, you'll need to "String Find" within your date vector. Finally, you'll "Remove from String" and you should be done.