How get value from text field?

daymonTwo

Hi, i want get value from text field and set value in other field but in log i see error 

2020-02-08 21:57:22,402 http-8080-5 ERROR admin 1377x821x1 ljf71i 127.0.0.1 /rest/com.onresolve.jira.plugin.Behaviours/1.0/behaviours/runvalidator.json [onresolve.jira.groovy.BehaviourManagerImpl] Something went wrong with method run in class
java.lang.NumberFormatException: For input string: "MYF-1"  

This is my code 

def cutomField=getFieldById("customfield_10000");
String value=(String)cutomField.getValue();
def sum=getFieldById("summary");
sum.setFormValue(value);

maybe someone write how get rid of this error. Thanks

Version my jira 5.0.3

 

 

daymonTwo

If I write this, then everything works fine

def cutomField=getFieldById("customfield_10000");
String value=(String)cutomField.getFormValue();
def sum=getFieldById("summary");
sum.setFormValue(value);