Convert Lookup Column value to String - Lookup List on separate site

[AMR80]

I have a "Scheduling" list on Site B that has a Lookup column called "Accessory". The Lookup list it refers to is on Site A and is called "Accessory Items". In my Flow I'm trying to do the following: 

When an item is created, if Accessory contains "Dummytext" then email someone.

My problem is, Accessory field does not show up in the dynamic content at all. I tried creating a variable to convert that lookup field to a string, but it doesn't show up then either. I also tried "compose" and "get item" from the lookup list since I've read those could be possible solutions... to no avail. I found an article that said the issue may be because the Lookup list is on a different site (the parent site actually). Am I up the creek without a paddle or is there a way to get that Accessory lookup column converted to text with my current setup. Thanks!  

[PrasadAthalye]

@AMR80  How did you create lookup field from another site? using Site Column and then added to the child list? If yes, that may be the reason.

You may be able to resolve this by customize the form in powerapps. Create a new data connection from parent site and create a dropdown that points to this data connection. Then, create a text column in your actual List to store the value and hide that in powerapps form. Then SET default value to dropdown value selected. This way you should be able to save the text value that you are looking for.

Like and Mark this as solution if this resolves your issue.