Replace dimension name in Bar chart

[NurulAin]

Hi, i have the following charts and need to change the dimension name "Not applicable" to "HUB" and "Papua New Guinea" to "PNG". Can someone show me how to go about this? 

Dimension used in this is "Market".

[NurulAin]

Sure, the excel file as attached. so many tabs there - i am using data from Initiatives tab. The Market field is in Column J.