Creating a workflow trigger specifically for property value changes within custom objects is not possible. Other possibilities you can consider would be using a combination of triggers and re-enrollment options.
Workflow Setup:
Create a Custom Object Workflow: In HubSpot Workflows, select Create Workflow
Choose the workflow type as ‘Your Custom Object Name’ Based Workflow
ex: Account Based Workflow
Set the Trigger:
In the enrollment trigger section, choose the property you want to monitor for changes ex: Customer First Name
From the dropdown menu next to the property, select (is known).
Enable Re-enrollment:
Click on the enrollment trigger box again.
Go to the (Re-enrollment) tab.
Enable re-enrollment for "when the chosen property is known.
PS: Repeat steps 2 and 3 for each of the properties you want to monitor
Adding some referece use cases which may help you out -
Creating a workflow trigger specifically for property value changes within custom objects is not possible. Other possibilities you can consider would be using a combination of triggers and re-enrollment options.
Workflow Setup:
Create a Custom Object Workflow: In HubSpot Workflows, select Create Workflow
Choose the workflow type as ‘Your Custom Object Name’ Based Workflow
ex: Account Based Workflow
Set the Trigger:
In the enrollment trigger section, choose the property you want to monitor for changes ex: Customer First Name
From the dropdown menu next to the property, select (is known).
Enable Re-enrollment:
Click on the enrollment trigger box again.
Go to the (Re-enrollment) tab.
Enable re-enrollment for "when the chosen property is known.
PS: Repeat steps 2 and 3 for each of the properties you want to monitor
Adding some referece use cases which may help you out -