Set custom field value based on Issue type selection using Script Runner behavior

Field Value based on Issue Type.groovy

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.*

  
def issuetype = getIssueContext().getIssueType().name


def selectcf = getFieldByName("Sub-type")
selectcf.setFormValue(null)

def customFieldManager = ComponentAccessor.getCustomFieldManager()
def optionsManager = ComponentAccessor.getOptionsManager()
def customField = customFieldManager.getCustomFieldObject(selectcf.getFieldId())
def config = customField.getRelevantConfig(getIssueContext())
def options = optionsManager.getOptions(config)


if (issuetype.contains("Custom Product")) {
    def optionsMap = options.findAll {
        it.value in ["Custom Requests","Survey Project Management","Proposals"] 
    }.collectEntries {
        [
                (it.optionId.toString()): it.value
        ]
    }
    selectcf.setFieldOptions(optionsMap)
}
else if (issuetype.contains("Data Innovations")) {
    def optionsMap = options.findAll {
        it.value in ["Comp. Tool Technical Help"] 
    }.collectEntries {
        [
                (it.optionId.toString()): it.value
        ]
    }
    selectcf.setFieldOptions(optionsMap)
}
else {
    def optionsMap = options.findAll {
        it.value in ["Job Matching Assistance Only", "Standard Data Extract","Job Matching and Data Extract","Prevailing Wage"] 
    }.collectEntries {
        [
                (it.optionId.toString()): it.value
        ]
    }
    selectcf.setFieldOptions(optionsMap)
    
    
}