How do I programmatically set the parameters of a Get Transform block?

I want to programmatically set the rigid body tree parameter of a get transform block and I tried doing that using the set_param function. If i write the value of the parameter as a string:

set_param(strcat(modelName, '/Get Transform'), 'RigidBodyTree', 'DOF3_Arm') %DOF3_Arm = importrobot('RobotStructure');

the associated field in the Block's Parameter will just have a string but no rigid body tree, and if I use a variable instead of the string i get the following error:

Error using Script_function_back2WF

Invalid setting in Get Transform block (mask) 'Get Transform' for parameter

'RigidBodyTree'

What is the correct way of setting this parameter? Thank you in advance!

[Ganesh]

Hi @Anna,

Passing the variable name as a string is the right way to do it.

You need to ensure that "DOF3_Arm" is a valid "RigidBodyTree" object in your base workspace.

The parameter field is expected to show the name of the variable as a string. When you click on the three dots beside it, you will see the location of the variable.