# LibTmux.UnsupportedQueryExpressionException.Expression

- **Module:** LibTmux.UnsupportedQueryExpressionException
- **Package:** LibTmux
- **Language:** .NET
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/6656a563ec9e07ab52e0c3ac96f7704fc94cc0c0/src/LibTmux/Exceptions/UnsupportedQueryExpressionException.cs#L36
- **Page:** https://libtmux.org/reference/dotnet/libtmux-unsupportedqueryexpressionexception-expression/

Gets the expression that could not be translated.

Empty when the refusal named no single expression.