Regex Hero results differ from vb.net - regex

Question

Hi I am using Regex Hero to make a Regex. It worked as expected in Regex Hero. I then transferred it over to vb.net and now I get different results from the same exact data. I don't get it!
The Regex:
\d{10,13}.+?(?=(\bF\b|\bT\b|\bCT\b))
The .net code:
Dim strRegex As String = "\d{10,13}.+?(?=(\bF\b|\bT\b|\bCT\b))"
Dim myRegex As New Regex(strRegex, RegexOptions.None)
Dim strTargetString As String = a
For Each myMatch As Match In myRegex.Matches(strTargetString)
If myMatch.Success Then
RichTextBox1.AppendText(myMatch.Value & Environment.NewLine)
End If
Next
The Data:
" The Meijer Team appreciates your business 12/26/14 Your fast and friendly checkout was provided by ALARIA MEIJER SAVINGS SPECIALS 4.77 COUPONS 20.00 SAVINGS TOTAL 24.77 YOUR TOTAL SAVINGS SINCE 01/01/14 1,814.62 For additional savings and rewards visit mPerks.com GENERAL MERCHANDISE 7569107330 DYNO GEL THIMBL 1.49 CT 7569100487 DYNO THIMBLES 3.49 CT DRUGSTORE 2220094152 DEODORANT 1.99 T 30041667803 TOOTHBRUSH 9.99 T *70882049496 ORBIT TOOTHB was 3.69 now 2.95 T *1700006806 ANTIPERSPIRANT 1 # 2 / 6.00 was 3.99 now 3.00 T GROCERY 6414404213 CHEF BOYARDEE 2 # 1.07 2.14 F 6414404306 CHEF BOYARDEE 1.07 F 6414404315 CHEF BOYARDEE 1.07 F 6414404322 CHEF BOYARDEE 1.07 F 7680828008 SPAGHETTI 2 # 1.34 2.68 F 5100002549 PASTA SAUCE 2 # 1.97 3.94 F 4335400750 TORTILLAS 1.99 F 4400000057 SALTINES 2.69 F 4400002854 NABISCO OREOS 2 # 2.98 5.96 F 1312000484 FROZEN FRIES 2.99 F 4125002562 CHEESE SLICES 2.99 F 4125010210 MEIJER MILK 2 # 3.09 6.18 F 5150092751 PANCAKE SYRUP 3.19 F 3000032188 OATMEAL 3.29 F 3000032189 OATMEAL 3.29 F 8390000649 GOLD PEAK TEA 3.29 F 71373336283 MEIJER MILK 3.29 F 4400002734 COOKIES 3.49 F 1410007083 PEPPERDIGE FARM 2 # 3.99 7.98 F 1600027297 CEREAL 4.19 F 1600043471 CEREAL 4.19 F 4850001833 ORANGE JUICE 5.69 F 1450001420 BIRDS EYE VOILA 7.39 F *4400003113 SNACK CRACKER was 2.77 now 1.99 F *5100002526 SPAGHETTIOS 3 # 5 / 5.00 was 3.27 now 3.00 F *7192176312 FROZEN PIZZA 2 # 5.49 was 12.58 now 10.98 F *7131400331 AUNT MILLIE"S 1 # 2 / 6.00 was 3.39 now 3.00 F Total Basket Coupon => 20.00 off -20.00 Mperks # -- ********** TOTAL MI 6% Sales Tax 1.16 TOTAL TAX 1.16 TOTAL 107.09 PAYMENTS Primary Account - Debit ATM/DEBIT CARD TENDER 107.09 XXXXXXXXXXXXXXXX NUMBER OF ITEMS 42 See meijer.com or the Service Desk for current return policy. For additional savings and rewards visit mPerks.com. Tx:XXX Op:XXXXXX Tm:XX St:XX XXXXXXXXXXX How are we doing? Rate your shopping experience and you may win $1000 in Meijer gift cards! Visit us at www.meijer.com/tellmeijer or call 1-800-394-7198 Secure Code: 7800-0601-5020-3373-001 Survey should be completed within 72 hrs "