How do you clear description when changing project or issuetype?

[Tim Perrault]

I was trying to set a default description, which I was able to do. My problem is when I change the issuetype the description is carried over. This also occurs when I change the project. I have the mapping set to a single project and single issue type. I was even trying to get past the issue with putting some validators in script that would check the issue type, but still no success. 

Jira v7.13.1

ScriptRunner v5.5.9 

def desc = getFieldById("description")

def defaultValue = """
{color:#505f79} _Complete this Story description using the following:_ {color}

*As a* <"role">

*I need*: <requirement or feature>

*So that* <goal/value>

"""

def accept = getFieldByName("Acceptance Criteria")

def acceptValue = """
{color:#505f79} _Include the Acceptance Criteria for this Story in the form of "Test Scenarios". If the criteria is documented elsewhere, provide the link._{color}

Test Scenario:

Test Scenario:

"""

if ((getActionName() == "Create") && (issueContext.issueType.name =="Story")) { 
desc.setFormValue(defaultValue)
accept.setFormValue(acceptValue)
}

[Yen-Wu Lo · Accepted solution]

The new feature of Database Picker in Scriptrunner 6.6.0 provided a solution for this.