XML Schema regex for integer range, excluding 0

I'm developing an XML schema and I need to restrict an integer to being within a ranger of -20 to 20, but not 0.

I was going to use minInclusive and maxInclusive for the -20 to 20.

I tried to add the regex "="^(?!0).+", but that does not appear to开发者_如何转开发 be a valid XML regex.

What value can I put in for xs:pattern that will prevent an integer from being 0?

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Have you tried enumerating the legal values. Workable since the range is quite small.

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Simple lack of escape character. The pattern value should have read "^(\?!0).+".