$node->nid is missing in PHP replacement pattern

While using this module and in particular sending email using PHP replacement for new content created I found that $node->nid is NULL.

I have inserted var_dump($node); in my email and received this email and the $node object contains just a few values, while most of them are empty. Inserting the output of var_dump() in the email:

##################################################################
object(stdClass)#26 (42) {
["nid"]=>
NULL
["vid"]=>
NULL
["uid"]=>
string(2) "22"
["created"]=>
int(1231380749)
["type"]=>
string(11) "stormticket"
["language"]=>
string(2) "en"
["changed"]=>
string(0) ""
["organization_nid"]=>
string(3) "193"
["project_nid"]=>
string(3) "200"
["task_nid"]=>
string(1) "0"
["ticketcategory"]=>
string(3) "bug"
["ticketstatus"]=>
string(8) "inserted"
["ticketpriority"]=>
string(5) "1-low"
["title"]=>
string(10) "Test Seven"
["datebegin"]=>
array(3) {
["month"]=>
string(1) "1"
["day"]=>
string(1) "8"
["year"]=>
string(4) "2009"
}
["dateend"]=>
array(3) {
["month"]=>
string(2) "-1"
["day"]=>
string(2) "-1"
["year"]=>
string(2) "-1"
}
["durationunit"]=>
string(5) "month"
["duration"]=>
string(0) ""
["pricemode"]=>
string(1) "-"
["price"]=>
string(0) ""
["currency"]=>
string(1) "-"
["body"]=>
string(0) ""
["format"]=>
string(1) "1"
["title_old"]=>
string(0) ""
["name"]=>
string(9) "TomV"
["date"]=>
string(0) ""
["status"]=>
bool(true)
["promote"]=>
bool(false)
["sticky"]=>
bool(false)
["op"]=>
string(4) "Save"
["submit"]=>
string(4) "Save"
["preview"]=>
string(7) "Preview"
["form_build_id"]=>
string(37) "form-976ff49863794cf40d22003369f50f"
["form_token"]=>
string(32) "9d502574a3ae3250888df01c26fb4f"
["form_id"]=>
string(21) "stormticket_node_form"
["comment"]=>
string(1) "2"
["menu"]=>
array(13) {
["mlid"]=>
int(0)
["module"]=>
string(4) "menu"
["hidden"]=>
int(0)
["has_children"]=>
int(0)
["customized"]=>
int(0)
["options"]=>
array(0) {
}
["expanded"]=>
int(0)
["parent_depth_limit"]=>
int(8)
["link_title"]=>
string(0) ""
["parent"]=>
string(21) "menu-ticket-support:0"
["weight"]=>
int(0)
["plid"]=>
string(1) "0"
["menu_name"]=>
string(19) "menu-ticket-support"
}
["path"]=>
string(0) ""
["upload"]=>
string(0) ""
["attach"]=>
string(6) "Attach"
["teaser"]=>
string(0) ""
["validated"]=>
bool(true)
}
Organisation:
Project:
Title: Test Seven