Reate an application to measure ideal weight using App Inventor

Create an application to run on android smart phones using App Inventor tool to measure ideal weight. This has to be based on Height, Age and Sex using suitable simple formula.
User should be able to enter his height, age and sex as an entry data on screen and application should give user his ideal weight.
Please send the program with the procedure (word document) to run it with actual screen shots of each step.
Kind Regards