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Cannot get field calculator expression correct

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I am looking to calculate "ID" field w/ the last character of input fc along with OBJECTID value. Instead I receive the value of "1" for each record of "ID" in the output?
Code:

    fclist = arcpy.ListFeatureClasses("Simplified_*","Line")

    for fc in fclist:

        Name = "Split_" + str(fc[-1])

        arcpy.CreateFeatureclass_management(inGDB,Name,"POLYLINE","#","DISABLED","DISABLED",2275)
        arcpy.AddField_management(Name,"ID","TEXT","#","#","#","#","NULLABLE","NON_REQUIRED","#")



        #Insert cursor to insert row into feature class table
        iCursor = arcpy.da.InsertCursor(Name, ["ID","SHAPE@"])

        with arcpy.da.SearchCursor(fc,["OID@", "SHAPE@"]) as sCursor:
            for row in sCursor:
                ID = row[0]
                for part in row[1]:
                    partnum = 0
                    prevX = None
                    prevY = None
                    for pnt in part:
                        if pnt:
                            # Print x,y coordinates of current point
                            #
                            print("{0}, {1}".format(pnt.X, pnt.Y))
                            if prevX:
                                array = arcpy.Array([arcpy.Point(prevX, prevY),
                                                    arcpy.Point(pnt.X, pnt.Y)])
                                polyline = arcpy.Polyline(array)
                                iCursor.insertRow([ID,polyline])
                            prevX = pnt.X
                            prevY = pnt.Y
                        else:
                            # If pnt is None, this represents an interior ring
                            #
                            print("Interior Ring:")
                    partnum += 1

        Expression = fc[-1] + "!OBJECTID!"
        arcpy.CalculateField_management(Name,"ID", Expression ,"PYTHON")

        del iCursor


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