How to update the table grid editor using exalate

import com.atlassian.crowd.embedded.api.User
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.jira.security.JiraAuthenticationContext
import com.atlassian.plugin.PluginAccessor
import com.atlassian.jira.user.ApplicationUser
import com.atlassian.jira.user.util.UserManager
   
   


// get TGE custom field
// replace 'mytable' below with the name of the table grid
//
CustomFieldManager customFieldManager = ComponentAccessor.getOSGiComponentInstanceOfType(CustomFieldManager.class);
CustomField tgeCustomField = customFieldManager.getCustomFieldObjectsByName("mytable").get(0);
Long tgeCustomFieldId = tgeCustomField.getIdAsLong();
   
// get exalate user - replace 'exalate' below with the user name of your proxy user
UserManager userManager = ComponentAccessor.userManager
User exalateUser = userManager.getUserByKey("exalate")?.directoryUser

// Get access to the table grid api   
PluginAccessor pluginAccessor = ComponentAccessor.getPluginAccessor();
Class dataManagerClass = pluginAccessor.getClassLoader().findClass("com.idalko.jira.plugins.igrid.api.data.TGEGridTableDataManager");
def tgeGridDataManager = ComponentAccessor.getOSGiComponentInstanceOfType(dataManagerClass);
   


// Provide the data which needs to be added


Map<String, Object> row = new HashMap<String, Object>();
row.put("isummary", "Some summary");
row.put("iassignee", "admin");
row.put("istatus", "Done");
row.put("idue", new Date().getTime());
   

try {
  List<Long> rowIds = tgeGridDataManager.addRows(Long.valueOf(issue.id), tgeCustomFieldId, Arrays.asList(row), exalateUser);
} catch (Exception e) {
  // log an error if things go wrong, but continue with the synchronisation.
  log.error("** Failed to add data due to " + e)
}
   

   
// do the normal sync stuff.

issue.summary      = replica.summary
issue.description  = replica.description
issue.comments     = commentHelper.mergeComments(issue, replica)
issue.attachments  = attachmentHelper.mergeAttachments(issue, replica)