Hi Roshan,
Thank you for activating our plugin on your site and for sharing the requirement which you want to achieve from our plugin.
In order to achieve the mentioned requirement, you will need to enter the negative fee which is -100Rs for the ‘Fee value’ setting which is present under the Fee section as shown in the screenshot: https://prnt.sc/lwvxod for your requirement payment method.
Then you will need to set ‘Minimum cart amount’ setting to 1000 which is present under the General options section in the same payment gateway link. Attaching a screenshot for your reference: https://prnt.sc/lwvyfz
So, when the above setting is set then the discount will be added to the cart when only the cart amount is greater than 1000INR.
Attaching screenshots of the front end: https://prnt.sc/lwvz6v , https://prnt.sc/lwvzdx
Please follow the above steps and let me know whether the provided instructions were helpful for you.
Regards,
Komal Maru