how can I export workspace to excel format?

I have calculate the ratio of area in BW image, defined a name for each one. Example : BWimage1= the area of image 1,….BWimage #n= the area of image # D={‘BWimage1’,’BWimage2’,…’BWimage #n’}; xlswrite('Firs Result.xls', D)

after export in excel, show just only the name of file such as (BWimage1) and so on. How can I export the value data from work space , for example BWimage1= 25445

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F