LFM.VDC-

So i dont know how your itms are set up but here is the script we use to stretch our hanger rods to the soffit write the service abbreviation into a field that can be added to a worksheet and also transform its elevation to a field for a label.   It should give you an idea of how to accomplish this.  Let me know if you have any questions on the script below

Requires Task.Selection

REM ******************************************************************************
REM * SCOPE: Drawing Database *
REM * DESCRIPTION: Copy item(s) Elavation to another field, move hanger top to *
REM * Soffit Elevation, Copy Service to another field *
REM * *
REM * PROPERTIES: JobItem.EndLocation(Bottom) *
Rem * JobItem.EndLocation(Top) *
REM * JobItem.Level *
REM * JobItem.Service *
REM * JobItem.ServiceType *
REM * JobItem.CustomData[8] *
REM * JobItem.CustomData[2] *
REM * JobItem.CustomData[7] *
REM * JobItem.Dim["Rod Extn Above"] *
REM * JobItem.Dim["Top Length"] *
REM * *
REM *----------------------------------------------------------------------------*
REM * CREATED BY: N.Chapman - GHAC/Madison *
REM * DIRECT: (608) 268-3116 *
REM * CELL: (608) 212-3464 *
REM * EMAIL: nchapman@generalheating.com *
REM * DATE: 5-6-2016 *
REM * REVISED BY: *
REM * REVISED Reason: *
REM * DIRECT: (xxx) xxx-xxxx *
REM * CELL: (xxx) xxx-xxxx *
REM * EMAIL: <user>@generalheating.com *
REM * DATE: mm-dd-yyyy *
REM ******************************************************************************

Dim Quote = ASCII(34)
Dim Ft = ASCII(39)
Dim Cr = ASCII(10)
Dim SectionElev
Dim CurrentElev
Dim Delta

Dim Loop = 1
While Loop <= Task.Selection.Count
Dim JobItem = Task.Selection[Loop]
SectionElev = JobItem.Level("soffit")
CurrentElev = JobItem.EndLocation(2,"top")
Delta = SectionElev - CurrentElev

If JobItem.ServiceType = "Hanger" And SectionElev > 0 Then
JobItem.Dim[7].Value = JobItem.Dim[7].Value + Delta
ElseIf JobItem.ServiceType = "Round hanger" And SectionElev > 0 Then
JobItem.Dim["Rod Extn Above"].Value = JobItem.Dim["Rod Extn Above"].Value + Delta
ElseIf JobItem.ServiceType = "Strap Hanger" And SectionElev > 0 Then
JobItem.Dim["Top Length"].Value = JobItem.Dim["Top Length"].Value + Delta
EndIf

Dim SBtm = JobItem.EndLocation(1,"Btm")
Dim SAb = JobItem.Service

Dim Len1 = Len(SBtm)
Dim Len2 = Len(SAb)
Dim Pt = InStr(1,SBtm,".")
Dim Pt1 = InStr(1,SAb,":")
Pt = Pt - 1
Pt1 = Pt1 + 1
Dim GetFrac = Right(SBtm,(Len1 - Pt))
Dim GetServ = Right(SAb,(Len2 - Pt1))
Dim Inch = Left(SBtm,Pt)
Dim Frac = 0
Dim GetFeet = Number(Inch) / 12
Dim Feet = RoundDown(GetFeet)
Dim DecInch = (GetFeet - Feet) * 12

If (Wildcard(GetServ, "*Chilled Water Return*")=1) Then
GetServ = "CHWR"
ElseIf (Wildcard(GetServ, "*Chilled Water Supply*")=1) Then
GetServ = "CHWS"
ElseIf (Wildcard(GetServ, "*Condensor Water Return*")=1) Then
GetServ = "CWR"
ElseIf (Wildcard(GetServ, "*Condensor Water Supply*")=1) Then
GetServ = "CWS"
ElseIf (Wildcard(GetServ, "*Hot Water Return*")=1) Then
GetServ = "HHWR"
ElseIf (Wildcard(GetServ, "*Hot Water Supply*")=1) Then
GetServ = "HHWS"
ElseIf (Wildcard(GetServ, "*Snow Melt Water Return*")=1) Then
GetServ = "SMWR"
ElseIf (Wildcard(GetServ, "*Snow Melt Water Supply*")=1) Then
GetServ = "SMWS"
EndIf

If GetFrac < .9375 Then
Select Number(GetFrac)
Case > .8124
Frac = "7/8"
Case > .6874
Frac = "3/4"
Case > .5624
Frac = "5/8"
Case > .4374
Frac = "1/2"
Case > .3124
Frac = "3/8"
Case > .1874
Frac = "1/4"
Case > .0624
Frac = "1/8"
Case > .9374
Frac = ""
Inch = Inch + 1
End Select
End If

Dim BtmElev
If Feet > 0 And Frac > 0 Then
BtmElev = Feet + Ft + "-" + DecInch + " " + Frac + Quote
ElseIf Feet > 0 Then
BtmElev = Feet + Ft + "-" + DecInch + Quote
Else
BtmElev = DecInch + " " + Frac + Quote
End If

JobItem.CustomData[8].Value = BtmElev
JobItem.CustomData[2].Value = GetServ
Loop = Loop + 1
EndWhile