Is that possible to make a model in which you can choose what certain model you are going to run? For example I have a list of models like:

  • Roads intersections detector level-1
  • Roads intersections detector level-2
  • Roads intersections detector level-3

And I want to create a model with a drop-down list with values which are names of that models I have in my toolbox. When value is selected the model launches certain submodel.

  • Yes. Have you tried creating three models that do something simple like copying a feature class to a different name for each (so you know which one ran), then added them to your model which you configure with a pick list?
    – PolyGeo
    Sep 8, 2016 at 8:48
  • @PolyGeo some of my models have pick lists and work with a same layer of roads. But one of them, for instance, needs to be checked with layer of quarters, another by town or village. So due to convenience for other users I would like to make something like a choice of what kind of model they are going to run. Sep 8, 2016 at 8:58
  • Exactly, but the place where you are stuck is the little model over the top. While you are figuring out how to make that you can use three test submodels (like I described). That way you get quicker test cycles and can show us all the components if you get stuck.
    – PolyGeo
    Sep 8, 2016 at 9:21

1 Answer 1


This can be done but requires a small bit of coding and you setting names, labels and aliases, none of which can be ignored.

Step 1 - Create a master model

Create the master model that will be the drop down list. Add a string variable and make it a parameter then set the value list to user friendly terms as shown below:

Setting value list

Step 2 - Create your 3 models that you want to execute independently

Use a standard Name and set the Label to be the text that was in the drop down, as shown below:

Setting model properties

Step 3 - Add a calculate value tool to master model

Note that the code imports the toolbox then calls the individual model by its Name (so not label),underscore then the toolbox alias (which I had set to myToolBox).


The full python code is as:

import arcpy
def run(mod):
    if mod == "model 1":
    elif mod == "my model 2":
    return True
  except arcpy.ExecuteError:
    return False
  • thanks for a detailed instruction! I made it all the way you show but I've got an error like Error running expression: run("Obj_checker_local") Traceback (most recent call last): File "<expression>", line 1, in <module> File "<string>", line 4, in run IOError: The toolbox file F:\Scratch\Toolbox.tbx was not found. Obj_checker is a label of one of my models Sep 8, 2016 at 15:10
  • F:\Scratch\Toolbox.tbx is my toolbox, I do not know where yours is or named, so you need to edit that line of code. I had created a toolbox with the master model and the 3 to be run all within a single toolbox. Also if you look very carefully I left in a deliberate error arcpy.mod1_myToolBox1(). My toolbox alias is myToolBox not myToolBox1.
    – Hornbydd
    Sep 8, 2016 at 15:49
  • okay, I will try to fix that, thank you one more time! Sep 8, 2016 at 18:14

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