RDL specification does not specify the arrows about the line element, so report builder does’t support the setting of arrows for line. With Aspose.Pdf for Reporting Services you can do that easily.

Currently, Aspose.Pdf renderer support  adding arrows at the start or end for lines:

1)

Parameter Name: ArrowAtStart

Date Type: String

Values supported:

2)

Parameter Name: ArrowAtEnd

Date Type: String

Values supported:

For example, there are two lines named ‘line1’ and ‘line2’ in the current report file,and line1 has the start arrow ,line2 has the start and end arrows,to satisfy these requirements,you can add report parameters ‘ArrowAtStart’ and ‘ArrowAtEnd’ for the specific report by the report builder as the following steps:

1) Set the value of parameter ‘ArrowAtStart to be ‘line1,line2’;

2) Set the value of parameter ‘ArrowAtEnd’ to be ‘line2’.

Notice:the charater between the line names MUST be  comma ,that is ‘,’.