Grep Styles - Conflicting - "^" not working in lookbehind and more

Question

Hi,
Still fighting my way in the jungle of paragraph grep styles.
In InDesign CS5 by the way.
I import text from DB and they all come in the same.
I need to use the same paragraph style to all paragraphs.
I really don't want to use find-change since that would mess up the xml holding the data.
Example-text explanation:
• All sizes are separated by ", - "
• …… = tab
• Not all rows have tab
• Sizes can be both numeric, letters, contain "/" and "-" and """ and " " (space) and yes indeed a "," comma!! (and every other idiotic combination you culd think of.)
• When only 2 posts in a row - should be separated by a ", " = (Comma-space)
• When more than 2 posts i a row - all posts but first and last should be hidden and separated by " - " (space-dash-space)
I have tried numerous combinations to get them all but they always conflict with each other.
Bugger!
I really shouldn't be impossible.
Is it possible in Paragraph grep styles to "catch" "any character but these" and kind of make a character-set like [!not this character]   (= [!a|b|c]  )
Is it possible to count the number of posts in a row? ( like... if more than 2 then hide...bla bla)
All sizes are separated by the same ", - " and sometimes I want to hide them, and somtimes I want to use one of them...
Is there any kind of "if-else" thing that can be used??
My original idea was to be able to catch them by using ^-combinations for beginning of paragraph and matching with tha linebreak and tab but it seems as if that don't always work when using positive or negative look-behind-ahead.
Oh, I'm blabbering. Sorry.
Any hints or pointers would be greatly appreciated.
/K
A) Got this - Original text
Same text but this is my Goal!
134/140, - 146/152, - 158/164……….299,-
134/140, - 146/152……….299,-
38, - 40, - 42, - 44, - 46……….399,-
38, - 40……….399,-
XS, - S, - M, - L, - XL……….399,-
XS, - S, - M, - L
XS, - M
XS, - S, - M, - L, - XL……….399,-
B 70, - 75, - 80, - 90, - 95……….199,-
B 70, - 75……….199,-
Medium-Wide 17”, - 17,5”……….995,-
Normal, - X-Wide……….999,-
16 mm 95, - 105, - 115, - 125, - 135, - 145…......99,-
16 mm 95, - 105……....99,-
134/140 - 158/164……….299,-
134/140, 146/152……….299,-
38 - 46……….399,-
38, 40……….399,-
XS - XL……….399,-
XS - L
XS, M
XS - XL……….399,-
B 70 - 95……….199,-
B 70, 75……….199,-
Medium-Wide 17”, 17,5”……….995,-
Normal, X-Wide……….999,-
16 mm 95 - 145…......99,-
16 mm 95, 105……....99,-
GrepStyle
Result wanted
,\s(?<=,\s)-\s.+(?=\s-)
Red undelined text will be hidden
(Got this)
134/140, - 146/152, - 158/164……….299,-
134/140, - 146/152……….299,-
38, - 40, - 42, - 44, - 46……….399,-
38, - 40……….399,-
XS, - S, - M, - L, - XL……….399,-
XS, - S, - M, - L
XS, - M
XS, - S, - M, - L, - XL……….399,-
B 70, - 75, - 80, - 90, - 95……….199,-
B 70, - 75……….199,-
Medium-Wide 17”, - 17,5”……….995,-
Normal, - X-Wide……….999,-
16 mm 95, - 105, - 115, - 125, - 135, - 145…......99,-
16 mm 95, - 105……....99,-
Need this to not conflict with other grep
blue underlined text needs to be hidden.
134/140, - 146/152, - 158/164……….299,-
134/140, - 146/152……….299,-
38, - 40, - 42, - 44, - 46……….399,-
38, - 40……….399,-
XS, - S, - M, - L, - XL……….399,-
XS, - S, - M, - L
XS, - M
XS, - S, - M, - L, - XL……….399,-
B 70, - 75, - 80, - 90, - 95……….199,-
B 70, - 75……….199,-
Medium-Wide 17”, - 17,5”……….995,-
Normal, - X-Wide……….999,-
16 mm 95, - 105, - 115, - 125, - 135, - 145…......99,-
16 mm 95, - 105……....99,-

Answer 1

There are error messages in the errorconsole.<br>
Firefox ignores the css rules because there is a syntax error at line 18:<br>
-->> table.heading {{background-image:url('barline.jpg');<br>
please remove one of the opening brackets here<br>
You can go to Mozilla Developer Network to learn CSS.<br>
https://developer.mozilla.org/en-US/learn/css<br>