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Hi,

I want to change the form types and customize the preview forms based on my project requirements. Is it possible to do that? If so how can i do that ?

### Version
2.3.0

### Directive
- [ ] stepway
- [ ] formViewer
- [ ] dragdropway


### Steps to reproduce
1.  
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### Expected behavior
What should happen

### Actual behavior
What is happening
