In which year treaty was signed between Raja Raj Singh of Chamba and Raja Sansar Chand of Kangra at Chamba?

Q. In which year treaty was signed between Raja Raj Singh of Chamba and Raja Sansar Chand of Kangra at Chamba?
Answer: 1788
Notes: Raja Raj Singh of Chamba and Raja Sansar Chand of Kangra signed a treaty in 1788 at Chamba