Custom Form unable to close

Custom Form developed from template.fmb. and done all below common steps

Form able to open but unable to close Form. please help on this.

steps done

 >Delete the followings from object nevigator.

                                   >Go to Data Blocks and delete BLOCKNAME, DETAILBLOCK

                                  >Go to Windows and delete BLOCKNAME

                                  >Go to Canvases and delete BLOCKNAME

b) Create a new Window (ex WINDOW10)

c) Create a new Canvas (ex CANVAS10) and attached it to the new Window via Property Palate

d) Create a new Datablock (ex CUSTOMERS) wth items from a table.

e) Create a frame in the Canvas and attached the items