OLGA Link 9-319-311.Click the Addbutton. A default trend is setup. 2.Select a Position or Equipment label in the Position/Equipcolumn that appears.3.If specifying a POSITION, it either must be predefined in the OLGA input file or created at run time using the features in the Add New Position group.4.If an error occurs when setting up the trends make sure that the trend position label exists in the input file and the spelling is correct.5.If you want to view a history of the trend variable while you run in dynamics, create a strip chart in HYSYS and drag the desired trend value on to it. 6.If you want to remove a trend variable, select a cell associated to the trend variable and click the Removebutton.The Add New Position feature allows you to create a new Position label without having to shutdown the OLGA program and editing the *.inp file. This Position label is stored in the snapshot/restart file, so as long you load this when restarting HYSYS, any Trends you create using the Add New Position feature will be correct. If you plan to shutdown the OLGA Server and then restart without loading the snapshot file, then it is advised to enter the Position labels directly in the *.inp file. To use the Add New Position feature: 1.Type in a Label for the new Position in the Labelcell.2.Type the branch number in the Branchcell, pipe number in the Pipecell, and section number in the Sectioncell of the pipe at which you want to trend a variable.3.Click the Addbutton. OLGA will respond with an error if it cannot reconcile your request against the existing loaded OLGA model.For the GlobalVariable type, the Position/Equip entry is not required.Tip:The Trend Interval allows you to specify some lower frequency (other than every time step) to retrieve the trend data from OLGA.