Terry,

In RegEx the brackets [ ] cannot contain "words", as I thing is your intention (poptech and crosst). The following elements / class expressions are instead allowed:

Simple Characters:
These are single characters that match themselves. To match a right square bracket (]), it must be the first character of the class expression, after any initial circumflex (see Negated Class Expressions). To match a hyphen, it must be either the first or the last character of the class expression. For example [AaBb] matches upper or lower case A or B.

Negated Class Expressions:
If the first character of a class expression is the circumflex (^), the expression matches any character not in the class. For example [^AB^] matches any character except A, B and the circumflex itself.

Range Expressions:
A range expression is two characters separated by a hyphen (-). It matches any characters with code points between those of the two characters. For example, [A-Za-z0-9-] matches any upper or lower case letter or digit, or the hyphen itself. Note that [a-z] also matches upper case letters, unless the option to match case is selected.

Character Class Operators:
These can be used as an alternative way of representing classes of characters. For example, [a-z] is equivalent to [[:lower:]] and [a-z0-9] is equivalent to [[:lower:][:digit:]]. (Note the extra pairs of brackets.) The defined classes are:

Hope this helps,

Roberto F.
LogSat Software