add or update data in downloader

Good morning,

Case 1. Downloader has daily intraday data downloaded in my computer via a data provider, assume its a one minute data. For example if jet airways LTP at 10:00 am is 423.50, I wanted to update that data to 426.5, simply add 3 to the existing price and see the value in the chart, how do I do this.


Case 2. Downloader has daily intraday data downloaded in my computer via a data provider, assume its a one minute data. For example if jet airways LTP at 10:00 am is 423.50, I wanted to ADD a new record as 10:01 am with LTP as 426.5, simply add 3 to the newly added row and see the value in the chart, how do I do this.

thanks
ml

add or update data in downloader