Python in Grasshopper: Mapping Buildings onto grasshopper built topography #urgent

Hello All,

I am working on a script to show students how to use python in grasshopper. As usual, python never adapts. I have troubleshooted this problem enough to know that there is no quick solution to my python component returning null despite running fine in the standalone python editor (i.e.: not through grasshopper).

The original python script is as follows:

import random
import rhinoscriptsyntax as rs
rs.EnableRedraw(False)

def placeBuildings(curve, distance):
pts=rs.DivideCurveLength(curve,5)
counter=0

for myPoint in pts:
counter=counter+1
#get the parmeter f current positision
param=rs.CurveClosestPoint(curve,myPoint)
#get teh tangent of this parameter
tangent=rs.CurveTangent(curve,param)
#calculate the angle of the tangent
angle=rs.Angle((0,0,0),tangent)

randomNumber=random.uniform(1,5)
heightOfBuilding=random.uniform(4,40)
rect=rs.AddRectangle(rs.WorldXYPlane(),randomNumber,2)
rs.MoveObject(rect,(0,randomNumber,0))

hull=rs.ExtrudeCurveStraight(rect,(0,0,0),(0,0,heightOfBuilding))
rs.RotateObject(hull,(0,0,0),angle[0])
rs.MoveObject(hull,myPoint)

#if counter%4:
#rs.AddCircle(myPoint,3)

#selection of curve
#curveParameter=rs.GetCurveObject("sel curve")
#curve=curveParameter[0]

curves=rs.GetCurveObject("select streets",4)
distance=rs.GetInteger("distance?",4)
for curve in curves:
placeBuildings(curve,distance)
rs.ReverseCurve(curve)
placeBuildings(curve,distance)

When placed in grasshopper it is the following:

import random
import rhinoscriptsyntax as rs

#randomNumber=random.uniform(1,5)
#rs.AddCircle((0,randomNumber,0), 2)

def placeBuildings(curve, distance):
pts=rs.DivideCurveLength(curve, 5)
counter=0

for myPoint in pts:
counter=counter+1
#get the parmeter f current positision
param=rs.CurveClosestPoint(curve,myPoint)
#get teh tangent of this parameter
tangent=rs.CurveTangent(curve,param)
#calculate the angle of the tangent
angle=rs.Angle((0,0,0),tangent)
randomNumber=random.uniform(1,5)
heightOfBuilding=random.uniform(4,40)
rect=rs.AddRectangle(rs.WorldXYPlane(),randomNumber,2)
rs.MoveObject(rect,(0,randomNumber,0))

hull=rs.ExtrudeCurveStraight(rect,(0,0,0),(0,0,heightOfBuilding))
rs.RotateObject(hull,(0,0,0),angle[0])
rs.MoveObject(hull,myPoint)

#selection of curve
#curveParameter=rs.GetCurveObject("sel curve")
#curve=curveParameter[0]

curves=x
distance=y

for curve in curves:
placeBuildings(curve,distance)
rs.ReverseCurve(curve)
placeBuildings(curve,distance)

I am unsure why there is no error being returned yet I cannot achieve any result other than null. Maybe someone could look at the script and tell me what is going wrong? I'm hoping to solve this before next Thursday so I might be asking for too much.

Much Appreciated.
-A