No, you can't use Myanmar language in SPSS software because it doesn't support it. If you try to type using a Myanmar font, then strange drawing will be shown instead.
According to the official website, only the following languages are accepted: Chinese Simplified, English, French, German, Italian, Japanese, Spanish.
For additional information, consult the following page: https://www.ibm.com/developerworks/downloads/im/spsstext/
