# Unsupported Features

URL: https://docs.iceteagroup.com/general/ported-reports/crystal-reports/unsupported-features

Cross tabs, graphs, lines and boxes, and the SAM_ReportNotify event are not supported.

## Cross tabs

Cross tabs must be redesigned by hand because the implementation of cross tabs in Report Builder and Crystal Report are too different.

## Lines and Boxes

Unfortunately we do not port lines and boxes because of a bug in Report Builder's COM interface.

## SAM_ReportNotify

The message *SAM_ReportNotify* cannot be generated because CR.NET doesn't generate runtime events while formatting the report. Usually this can easily be replaced by one of the supported *SAM_Report* * messages, typically *SAM_ReportStart* .

*SAM_ReportNotify* is not supported because the version of Crystal Reports that ships with Visual Studio doesn't generate formatting notifications. In most cases, the code in *SAM_ReportNotify* can be moved in the other SAM_Report messages.

## Null values

Crystal Report doesn't support passing null values to functions, more accurately, CR treats null values as a database engine would and nulls the entire expression. In case the report logic contains a formula that expects a null value, after porting the result of the formula evaluation will always be null.