diff --git a/lib/assertions.js b/lib/assertions.js
index 1ba6d17..bd9ecd2 100644
--- a/lib/assertions.js
+++ b/lib/assertions.js
@@ -135,8 +135,12 @@ const oidc = {
       nonce,
       accessToken = crypto.randomBytes(15).toString('hex'),
     ) => {
-      const sub = `s=${nric},u=${uuid}`
-
+      let sub
+      if(nric.startsWith('Y')){
+        sub = `s=${nric},fid='G730Z-H5P96',coi='DE',u=${uuid}`                
+      }else{ 
+        sub = `s=${nric},u=${uuid}`
+      }
       const accessTokenHash = hashToken(accessToken)
 
       const refreshToken = crypto.randomBytes(20).toString('hex')