Dialog box with multiline input?

I am working on automating one of our more tedious graphic types, a typed up deposition, and ran into a snag. I have a dialog box pop up that the user populates. They put in the Deponent's name, position, and then I have a large area for them to paste in the text they would like to insert into the graphic. Unfortunately it only pastes the first line of the text. Is there a way to input more than one line into a dialog box? Initial searches lead me to believe that prompt inputs can only be one line, but I have to imagine there is a way. Any ideas? Not having any issues putting the text in the box, the issue is pasting into the dialog.

Thanks!

Here is a trimmed down version of the portion of the dialog I am having issues with:

The content GRP is the area I was planning to use for the multi-line text blocks.

// Export dialog    this.dlg = new Window('dialog', 'Create new depo layer');    // PANEL to hold options    var msgPnl = this.dlg.add('panel', undefined, 'Create new deposition layer');    // content GRP    var contentGrp = msgPnl.add('group', undefined, '')    contentGrp.oreintation = 'row';    contentGrp.alignment = [ScriptUI.Alignment.LEFT, ScriptUI.Alignment.TOP]       var contentSt = contentGrp.add('statictext', undefined, 'Content:');    contentSt.size = [100,20]    var contentEt = contentGrp.add('edittext', undefined, '');    contentEt.size = [ 300,500 ];       var btnPnl = this.dlg.add('group', undefined, '');    btnPnl.orientation = 'row'    btnPnl.cancelBtn = btnPnl.add('button', undefined, 'Cancel', {name:'cancel'});    btnPnl.cancelBtn.onClick = function() {this.dlg.close() };    // OK button    btnPnl.okBtn = btnPnl.add('button', undefined, 'Create Single Depo Layer', {name:'ok'});    btnPnl.okBtn.onClick = function() {            //add the textPull content in            var textPullBox = docRef.textFrames.getByName("textPull");            if(contentEt.text != ''){               textPullBox.contents = contentEt.text;            }            var paraStyle;            if (contentEt.text.match(/Q./) || contentEt.text.match(/A./)){                paraStyle = docRef.paragraphStyles.getByName("DepoPull");                }            else{                paraStyle = docRef.paragraphStyles.getByName("TextPull");                }            //apply the paragraph style            for(tp=0; tp<textPullBox.paragraphs.length-1; tp++) {                paraStyle.applyTo(textPullBox.paragraphs[tp], true);            }                       //close dialog box            this.dlg.close();    };       this.dlg.show();