Here we can enter one value, here it can't shows lovs. In catalog colomns we can select the value for which we can insert the pick list.
User have a prompt page with a text box prompt and the user types the value. When the user types the product name 'ex: laptop' and clicks 'finish' the report page has to display all the records relevent to laptop. When the user types 'All' in the text box prompt and clicks 'Finish' the report has to display all the products.
By using String variable, we can select or enter multiple values.
By using the following condition as the filter for the textbox prompt we can get the data for the specified product as well as All products when we type ALL in textbox prompt.