Special character issue on additem method

Hi All,

I am facing an issue :

I have a product for eg: Router Livebox 2.1. When running a script I believe the additem method is throwing an error because of the product having special character as .(dot).

Error:

Mismatched brackets in following part of the path:

.1]

Please correct the error and try again.(SBL-CFG-00109).  More details follow: Mismatched brackets in following part of the path:

.1]

Please correct the error and try again.(SBL-CFG-00109).(SBL-CFG-00107)

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The additem method step present in my script:

str=$.[Fijo]#1.[Equipamiento - envio logistico]#[Router Livebox 2.1] //Product path

temp=AddItem(str,"Promociones",Descuento,"1");

I believe the .(dot) is conflicting because the syntax already contains a .(dot) which is used to specify a relationship.