field adjustment

Question

Hi,
When i am displaying some text if i adjust the text box length and width according to it it is displaying but when i am trying to adjust text box of type number it is not displaying the output.
eg. my text box of number in detail section. when i tried to reduce its width and increase its length by dragging down area it is displaying ######### instead of number.
Can any one please let me know the option to adjust the field in CR.
Thanks in advance.