How to set watcher based on custom field with Scriptrunner

[taher shili]

how can I Set watcher based on Custom field using scriptrunner :

[Neil Arrowsmith]

Give this a try...

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.MutableIssue
import com.atlassian.jira.issue.watchers.WatcherManager
   
CustomFieldManager customFieldManager = ComponentAccessor.getCustomFieldManager()
field_value = issue.getCustomFieldValue(customFieldManager.getCustomFieldObjectByName("CUSTOM FIELD NAME"))
WatcherManager watcherManager = ComponentAccessor.getWatcherManager()
watcherManager.startWatching(field_value, issue)

[taher shili]

I  have this error : 

[static type cheking] - cannot find matching methood
com.atlassian.jira.issue.watchers.watcherManager#startWatching(Java.lag.object)

com.atlassian.jira.issue.mutableIssue) please check if the declared type is rightand if the method exists.

[taher shili]

i try this code but he don't work : 

1. import com.atlassian.jira.component.ComponentAccessor
   import com.atlassian.jira.issue.fields.CustomField
   import com.atlassian.jira.issue.CustomFieldManager
   import com.atlassian.jira.issue.MutableIssue
   import com.atlassian.jira.issue.watchers.WatcherManager
   String userName;
   def cf = ComponentAccessor.customFieldManager.getCustomFieldObjectByName("supp")
   def someUser = issue.getCustomFieldValue(cf)
   userName=someUser
   def WatcherUser =ComponentAccessor.getUserManager().getUserByName(userName)
   def watcherManager = ComponentAccessor.getWatcherManager()
   watcherManager.startWatching(WatcherUser,issue)