Differebd behaivour fo characters

Hi,
managed to show Czech characters in PDF form.
But I have problem with character space. After I add some Czech character, all string in form field gets double spacing of characters. This cause to disappear half of text.
Somebody had same problem?

http://s3.postimg.org/7u5ky8mtf/PDF.png

Basicaly:
    int fontID = [DQPL AddTrueTypeFont:@"Arial {1250}" :1];
    
    NSLog( @"%d", [DQPL SelectFont:fontID]);
    
    [DQPL SetFontFlags:1 :0 :0 :1 :0 :0 :0 :0];
    int newFontID = [DQPL AddFormFont:fontID];
    
    // update font
    int field_count = [DQPL FormFieldCount];
    while (field_count > 0)
    {
        NSLog(@"%@", [DQPL GetFormFieldTitle:field_count]);
        
        NSLog(@"Add font %d", [DQPL SetFormFieldFont:field_count :newFontID]);
        
        field_count--;
    }
    
    // set form field
    [DQPL SetFormFieldValueByTitle:@"Main_Name" : @"ěščřžýáíé "];
    
    // flate form field
    field_count = [DQPL FormFieldCount];
    while (field_count > 0)
    {
        [DQPL UpdateAndFlattenFormField:field_count];
        
        field_count--;
    }