dnSpy - Decompiler generated variables can't be evaluated

Question

I write a code in dnSpy and after running , the dnSpy give me errors.

My code :

ProductInfo pi = new ProductInfo();
pi.name = "Jack";
pi.isactive = true;
pi.license = "123";

Errors :

1. pi | Decompiler generated variables can't be evaluated
2. Form | Decompiler generated variables can't be evaluated

After clicking Evaluate now button :

1. pi | error CS0103: The name 'licenseInfo' does not exist in the current context
2. Form | error CS0103: The name 'licenseInfo' does not exist in the current context