problem description

execute the business process (such as placing an order) in Wechat"s official account, wake up Mini Program after the end, and initiate a video chat. During this period, Mini Program needs to be awakened with parameters. The problem with
now is that by consulting Mini Program"s documents, we can"t find out how to evoke Mini Program in the H5 page.
(the official account of Huaxi second Hospital, which has similar business with ours, can wake up Mini Program and pass parameters. )

the environmental background of the problems and what methods you have tried

current attempted solution:
1. In Wechat"s picture and text message, you can insert Mini Program, embed it in the H5 page, adjust Mini Program, or customize the parameters. But the parameter is a fixed value can not be changed, try to replace the fixed value through js, because the cross-domain problem is not good.
2. After placing an order, the user jumps to the middle page, which displays the QR code converted by the link he has stitched together. Users can wake up Mini Program by long pressing the scan QR code and carry parameters. But this requires one more step of interaction, so look for a better solution.

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

I hope the boss who is familiar with this area will give us some advice on whether this can be realized. Because our developers say that Huaxi can only be called because of cooperation with Wechat, which belongs to their unique interface. If that"s the case, at least we can give up.

if it can be achieved, please let me know or give some advice on how to achieve it.
Thank you in advance!