calling 32 bit dll library from 64 bit native application using PB 12.6 Classic

Hi, I have an application which recently migrated and compiled using PowerBuilder 12.6, but when it try to call dll external function, it fail to load and giving error "Error opening DLL library xxxx.DLL for external function..." Compiled using 32bit option doesn't have this issue..

Is there workaround to call 32 bit dll library function from 64bit application ?

Thanks!