In this example, I use Bahasa (Malay language) and English.
To set value for each language, we can customize the value in Look and Feel part.
Step 1: Click icon Look and Feel in the portlet header.
Step 2: Click tab Portlet Configuration, check box Use Cutom Title. Then define portlet title to appropriate language.
Step 3: Save.
Then results shown below.
a) Bahasa (Malay language)
b) English.