How to clean single select field(convert from text field) value?

[lizong wei]

I used the Behaviours function to simulate the secondary interactive drop-down menu

import com.atlassian.jira.component.ComponentAccessor;
def dutyCode = getFieldById(getFieldChanged())
def rootCauseCode = getFieldByName("Root Cause Code")
def dutyCodeValue = dutyCode.value as String
def queryValue = dutyCodeValue.split(' ')[0] as String

//convert text field to single select field
rootCauseCode.convertToSingleSelect([
ajaxOptions: [
url : getBaseUrl() + "/rest/scriptrunner/latest/custom/getRootCauseCodeByDutyCode?query=" + queryValue,
query: false,
formatResponse: "general"
]
])

//clean rootCauseCode value when options updated
rootCauseCode.setFormValue('') //this line don't work

How should I do?  thanks!

[John Chin]

Hi @lizong wei 

What about move the clear value line before converting the text field? 

//clean rootCauseCode value when options updated
rootCauseCode.setFormValue("")

//convert text field to single select field
rootCauseCode.convertToSingleSelect([
ajaxOptions: [
url : getBaseUrl() + "/rest/scriptrunner/latest/custom/getRootCauseCodeByDutyCode?query=" + queryValue,
query: false,
formatResponse: "general"
]
])