Automation to trigger an email whenever the value of the Business Process Owner group

I want to implmented using Script runner but i am using the normal field 

Dear @Pavan kumar Mamidipaka

I have tested the group lookup and notif flow in Jira Cloud and it worked.
User this script.

def groupFieldId = "customfield_10064" // Change your actual field ID
def targetStatus = "Draft" // Change your target status

if (issue.fields.status.name != targetStatus) {
return
}

def groups = issue.fields[groupFieldId] as List

if (!groups) {
logger.warn("No group selected.")
return
}

def users = []

groups.each { group ->
def membersResp = get("/rest/api/3/group/member")
.queryString("groupId", group.groupId)
.asObject(Map)

membersResp.body.values.each { user ->
if (user.active) {
users << [accountId: user.accountId]
}
}
}

users = users.unique { it.accountId }

if (!users) {
logger.warn("No active users found in the selected group.")
return
}

def notifyBody = [
subject : "Issue ${issue.key} requires your attention",
textBody: "Issue ${issue.key} has transitioned to ${targetStatus}.",
htmlBody: "Issue <b>${issue.key}</b> has transitioned to <b>${targetStatus}</b>.",
to: [
users: users
]
]

post("/rest/api/3/issue/${issue.key}/notify")
.header("Content-Type", "application/json")
.body(notifyBody)
.asString()

i want to implement Same code for each and every status right??

While implementing this code through Script runner behaviour i am getting the comile time errors and how do you implement.

Dear @Pavan kumar Mamidipaka

For this requirement, I would not implement it as a Behaviour. Behaviours are mainly for controlling field behaviour on the issue screen, such as showing/hiding fields, making fields required, or setting field values while the user is editing the issue.

Since you want to send an email when the issue reaches a specific status, the better place to implement this is a ScriptRunner Script Listener or a workflow-related script.

You also don't need to create the same script for every status. You can use one script and check the current status inside it, or configure the listener for the specific transition/status you need.

If you can share the compile error and confirm the exact status where the email should be sent, I will adjust the script for that listener context.