Filter out blank currency values in application

I'm using the field AOPN in an application which is based on V43121F. I want to filter out values that are blank/empty/null/zero. The UBE R43450 uses <is not equal to "                             "> in the data selection. I'm trying to achieve the same results by setting the filter on the form control and assigning a value in the Post Dialog is Initialized ER in the application. I've tried != 0, "0", " ", "                             ", "" when assigning a value and nothing works to filter out the blank/empty/null/zero values. They also don't work in the QBE or the browser, however they