Use baselineShift property of the paragraph style.
Could you be a little bit more specific? I'm really new at Scripting.
For example, I want to set base line shift in a paragraph style called "Body Text" to -1.
var myDoc = app.activeDocument; var myParStyle = myDoc.paragraphStyles.item("Body Text"); myParStyle.baselineShift = -1;
Thank you for the help Kasyan! That works perfectly.