update documentation

sftp-connector-product/README.md

@@ -55,58 +55,60 @@ Before starting the demo, please make sure to have an SSH/SFTP server on your co
 
    \* In order to test the connector with SSH key pair, put the public key file to folder `c:/sshkey`. 
 
-2. Open the `configuration/variables.yaml` in your Designer and update the following global variables:
-
+2. Configure one or more SFTP connectors in global variables. A SFTP connector is identified by a name and a global variable section containing access information. The following example shows connection information for a SFTP connector that should be accessible under the name local-rebex.
+Put this variable block into your project. At least `host`, `auth`, `username` and `password` must be defined.
    ```
    
    Variables:
 
      com.axonivy.connector.sftp.server:
-       # The host name to the SFTP server
-       host: 'localhost'
+       local-rebex:
+         # The host name to the SFTP server
+         host: 'localhost'
        
-       # Auth type to the SFPT server: password OR ssh
-       auth: 'password'
+         # Auth type to the SFPT server: password OR ssh
+         auth: 'password'
        
-       # The password to the SFTP server
-       password: pwd
+         # The password to the SFTP server
+         password: pwd
 
-       # The port number to the SFTP server
-       port: 22
+         # The port number to the SFTP server
+         port: 22
 
-       # The username to the SFTP server
-       username: 'usr'
+         # The username to the SFTP server
+         username: 'usr'
 
    ```
 
-   Or in order to enable the connector with SSH keypair, update following global variables:
+   Or in order to enable the connector with SSH keypair, `secret.sshkey` and `secret.sshpassphrase` must be defined:
    ```
    
    Variables:
 
      com.axonivy.connector.sftp.server:
-       # The host name to the SFTP server
-       host: 'localhost'
+       local-rebex:
+         # The host name to the SFTP server
+         host: 'localhost'
        
-       # Auth type to the SFPT server: password OR ssh
-       auth: 'ssh'
+         # Auth type to the SFPT server: password OR ssh
+         auth: 'ssh'
        
-       # The password to the SFTP server
-       password: ''
+         # The password to the SFTP server
+         password: ''
 
-       # The port number to the SFTP server
-       port: 22
+         # The port number to the SFTP server
+         port: 22
 
-       # The username to the SFTP server
-       username: 'usr'
+         # The username to the SFTP server
+         username: 'usr'
        
-       # The ssh key string to SFTP server
-       # [secret private key]
-       secret_sshkey: |
-         YOUR PRIVATE KEY CONTENT HERE
+         # The ssh key string to SFTP server
+         # [secret private key]
+         secret.sshkey: |
+           YOUR PRIVATE KEY CONTENT HERE
 
-       # The ssh key passphrase
-       secret_sshpassphrase: 'Your ssh key passphrase'
+         # The ssh key passphrase
+         secret.sshpassphrase: 'Your ssh key passphrase'
    ```
    \* the private key is in pair of the public key put in step 1