Problem with blank spaces, fields and smartfroms!

Hello ABAP developers!

My problem is the following:

I have got a text element in a smartform. In the text element there are normal text and fields, ic est:

&G_T_CIRCULARES-ID14&,<b> a &G_T_CIRCULARES-ID15&</b>

<b>N/Ref: &G_T_CIRCULARES-ID12&</b>

Con el fin de realizar la factura correspondiente ...........

As you can see there are blank spaces between the fields and the normal text, but when I activate the smartform, the following happen:

&G_T_CIRCULARES-ID14&, <b>a&G_T_CIRCULARES-ID15&</b>

<b>N/Ref:&G_T_CIRCULARES-ID12&</b>

Con el fin de realizar la factura correspondiente .....

And the blank spaces (in bold) disappear. I don't know way .... I think it could be the typical stupid newbie error.

Any solutions? Thanks a lot!!