Values are always string

Summary

It appears, currently values are always treated as string.

All values that are used in cfoods to set Property values, description etc. are string. Often those values are from reg exp matching and then they are obbiously string. However, other cases might be possible (especially, when transform functions will be used).

Expected Behavior

Type is not changed.

Actual Behavior

The replace_variables function makes all values to string.