| Number | Constant | Description |
|---|---|---|
| 20050 | RegExprError_InvalidRange | Invalid range given in square brackets. Example: [Z-A] |
| 20051 | RegExprError_NoMatch | RegExprResult was called after RegExpr returned False or RegExpr wasn't called at all before RegExprResult. |
| 20052 | RegExprError_InvalidRegExpr | The given regular expression was not syntactically correct. |
| 20053 | RegExprError_InvalidParameter | A parameter was invalid |
| 20054 | RegExprError_InternalError | An internal error occurred in RegExpr.Bas. |