public function addVariableForRecipient(string $recipient, string $name, string $value): self
    {
        $this->recipientVariables[$recipient][$name] = $value;

        return $this;
    }
public function addVariableForRecipient(string $recipient, string $name, string $value): self
    {
        $this->recipientVariables[$recipient][$name] = $value;

        return $this;
    }
public function addVariableForRecipient ( string $ recipient , string $ name , string $ value ) : self { $ this -> recipientVariables [ $ recipient ] [ $ name ] = $ value ; return $ this ; }
Set variable for recipient.

@param string $recipient
@param string $name
@param string $value

@return $this
Set variable for recipient .