URL link parameter for Id dynamic object set as string

I am trying to create a URL link that will show a contact details when that contact name is selected. Creating suitable parameters generates code defining the parameter as such:
[Parameter]
public dynamic ContactId { get; set; }
This is the same for other code generated to handle the standard grid line item select for record edit, passing ContactId to the appropriate get method/ etc.
The custom URL includes the ContactId in the URL as parameter thus :
localhost:5000:display-contact/123 (123 being the appropriate ContactId).
The ContactId is however received as a string in the ShowContactComponent class - generating a runtime error. If the variable is manually updated via VS debug to integer the data is displayed as expected.
I cant see any obvious solution to this in the Radzen tool t ensure the code generated handles the parameter correctly.
Anyone seen this/ have a possible solution?

Many thanks!

You may also cast explicitly before passing page parameters
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Many thanks for your reply, pointed me in the right direction. Found that the following worked for me in the parameter properties
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Cheers,